Remove more old-console-related files (#2866)

With GKE, we don't need the individual servlets because the services
aren't partitioned out the same way they were in GAE.

We keep FrontendServlet and BackendServlet around for now as they serve
as the backbone for the local RegistryTestServer (for testing things
like the console).

did some cursory tests on alpha and things seem to be unaffected -- I
was able to curl RDAP (pubapi) and create domains

.gitignore

@@ -121,9 +121,5 @@ core/**/registrar_dbg*.js
 core/**/registrar_bin*.css
 core/**/registrar_dbg*.css
 
-# Appengine generated files
-core/WEB-INF/appengine-generated/*.bin
-core/WEB-INF/appengine-generated/*.xml
-
 # jEnv
 .java-version

appengine_war.gradle

@@ -1,108 +0,0 @@
-// Copyright 2019 The Nomulus Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-apply plugin: 'war'
-
-def environment = rootProject.environment
-def gcpProject = rootProject.gcpProject
-
-// Set this directory before applying the appengine plugin so that the
-// plugin will recognize this as an app-engine standard app (and also
-// obtains the appengine-web.xml from the correct location)
-project.convention.plugins['war'].webAppDirName =
-        "../../core/src/main/java/google/registry/env/${environment}/${project.name}"
-
-apply plugin: 'com.google.cloud.tools.appengine'
-
-def coreResourcesDir = "${rootDir}/core/build/resources/main"
-def coreLibsDir = "${rootDir}/core/build/libs"
-
-// Get the web.xml file for the service.
-war {
-    webInf {
-        from "../../core/src/main/java/google/registry/env/common/${project.name}/WEB-INF"
-    }
-}
-
-war {
-    from("${coreResourcesDir}/google/registry/ui/html") {
-        include "*.html"
-    }
-    from("${coreLibsDir}") {
-        include "core.jar"
-        into("WEB-INF/lib")
-    }
-}
-
-if (project.path == ":services:default") {
-    war {
-        from("${coreResourcesDir}/google/registry/ui/html") {
-            include "*.html"
-            into("registrar")
-        }
-    }
-}
-
-appengine {
-    deploy {
-        // appengineDeployAll task requires the version to be set. So,
-        // this config lets gcloud select a version name when deploying
-        // to alpha or sandbox from our workstation.
-        if (!rootProject.prodOrSandboxEnv) {
-            version = 'GCLOUD_CONFIG'
-        }
-
-        // Don't set gcpProject directly, it gets overriden in ./build.gradle.
-        // Do -P environment={crash,alpha} instead.  For sandbox/production,
-        // use Spinnaker.
-        projectId = gcpProject
-    }
-}
-
-dependencies {
-    implementation project(path: ':core', configuration: 'deploy_jar')
-}
-
-// The tools.jar file gets pulled in from the java environment and for some
-// reason gets exploded "readonly", causing subsequent builds to fail when
-// they can't overwrite it.  The hack below makes the file writable after
-// we're done exploding it.
-//
-// Fun fact: We only use this jar for documentation generation and as such we
-// don't need it in our warfile, as it is not used by the application at
-// runtime.  But it's not clear how to exclude it, as we seem to be
-// constructing the jar from the entire WEB-INF directory and per-file
-// exclude rules don't seem to work on it.  Better solutions are welcome :-)
-explodeWar.doLast {
-    file("${it.explodedAppDirectory}/WEB-INF/lib/tools.jar").setWritable(true)
-}
-
-appengineDeployAll.mustRunAfter ':console-webapp:deploy'
-appengineDeployAll.finalizedBy ':deployCloudSchedulerAndQueue'
-
-rootProject.stage.dependsOn appengineStage
-tasks['war'].dependsOn ':core:processResources'
-tasks['war'].dependsOn ':core:jar'
-
-// Impose verification for all of the deployment tasks.  We haven't found a
-// better way to do this other than to apply to each of them independently.
-// If a new task gets added, it will still fail if "environment"  is not defined
-// because gcpProject is null.  We just won't get as friendly an error message.
-appengineDeployAll.configure rootProject.verifyDeploymentConfig
-appengineDeploy.configure rootProject.verifyDeploymentConfig
-appengineDeployCron.configure rootProject.verifyDeploymentConfig
-appengineDeployDispatch.configure rootProject.verifyDeploymentConfig
-appengineDeployDos.configure rootProject.verifyDeploymentConfig
-appengineDeployIndex.configure rootProject.verifyDeploymentConfig
-appengineDeployQueue.configure rootProject.verifyDeploymentConfig

build.gradle

@@ -331,9 +331,6 @@ subprojects {
 
   // Set up all of the deployment projects.
   if (services.contains(project.path)) {
-
-    apply from: "${rootDir.path}/appengine_war.gradle"
-
     // Return early, do not apply the settings below.
     return
   }
@@ -380,17 +377,6 @@ subprojects {
   }
 }
 
-// Force SDK download and deployment to be sequential, otherwise parallel tasks
-// will fail. For SDK download, they will try to write to the same location to
-// upgrade gcloud. For deployment, they will try to deploy different services to
-// the same project at the same time.
-for (int i = 1; i < services.size(); i++) {
-  project("${services[i]}").downloadCloudSdk
-          .dependsOn(project("${services[i - 1]}").downloadCloudSdk)
-  project("${services[i]}").appengineDeployAll
-          .dependsOn(project("${services[i - 1]}").appengineDeployAll)
-}
-
 // If "-P verboseTestOutput=true" is passed in, configure all subprojects to dump all of their
 // output and final test status (pass/fail, errors) for each test class.
 //

config/nom_build.py

@@ -56,7 +56,7 @@ PROPERTIES_HEADER = """\
 # nom_build), run ./nom_build --help.
 #
 # DO NOT EDIT THIS FILE BY HAND
-org.gradle.jvmargs=-Xmx1024m
+org.gradle.jvmargs=-Xmx2048m
 org.gradle.caching=true
 org.gradle.parallel=true
 """

config/presubmits.py

@@ -105,9 +105,8 @@ PRESUBMITS = {
     # System.(out|err).println should only appear in tools/ or load-testing/
     PresubmitCheck(
         r".*\bSystem\.(out|err)\.print", "java", {
-            "StackdriverDashboardBuilder.java", "/tools/", "/example/",
-            "/load-testing/", "RegistryTestServerMain.java",
-            "TestServerExtension.java", "FlowDocumentationTool.java"
+            "/tools/", "/example/", "/load-testing/",
+            "RegistryTestServerMain.java", "TestServerExtension.java"
         }):
         "System.(out|err).println is only allowed in tools/ packages. Please "
         "use a logger instead.",
@@ -120,7 +119,7 @@ PRESUBMITS = {
     ):
         "In SOY please use the ({@param name: string} /** User name. */) style"
         " parameter passing instead of the ( * @param name User name.) style "
-        "parameter pasing.",
+        "parameter passing.",
     PresubmitCheck(
         r'.*\{[^}]+\w+:\s+"',
         "soy",
@@ -139,41 +138,6 @@ PRESUBMITS = {
         {},
     ):
         "All soy templates must use strict autoescaping",
-
-    # various JS linting checks
-    PresubmitCheck(
-        r".*goog\.base\(",
-        "js",
-        {"/node_modules/"},
-    ):
-        "Use of goog.base is not allowed.",
-    PresubmitCheck(
-        r".*goog\.dom\.classes",
-        "js",
-        {"/node_modules/"},
-    ):
-        "Instead of goog.dom.classes, use goog.dom.classlist which is smaller "
-        "and faster.",
-    PresubmitCheck(
-        r".*goog\.getMsg",
-        "js",
-        {"/node_modules/"},
-    ):
-        "Put messages in Soy, instead of using goog.getMsg().",
-    PresubmitCheck(
-        r".*(innerHTML|outerHTML)\s*(=|[+]=)([^=]|$)",
-        "js",
-        {"/node_modules/", "registrar_bin."},
-    ):
-        "Do not assign directly to the dom. Use goog.dom.setTextContent to set"
-        " to plain text, goog.dom.removeChildren to clear, or "
-        "soy.renderElement to render anything else",
-    PresubmitCheck(
-        r".*console\.(log|info|warn|error)",
-        "js",
-        {"/node_modules/", "google/registry/ui/js/util.js", "registrar_bin."},
-    ):
-        "JavaScript files should not include console logging.",
     PresubmitCheck(
         r".*\nimport (static )?.*\.shaded\..*",
         "java",
@@ -303,26 +267,6 @@ def verify_flyway_index():
   return not success
 
 
-def verify_javascript_deps():
-  """Verifies that we haven't introduced any new javascript dependencies."""
-  with open('package.json') as f:
-    package = json.load(f)
-
-  deps = list(package['dependencies'].keys())
-  if deps != EXPECTED_JS_PACKAGES:
-    print('Unexpected javascript dependencies.  Was expecting '
-          '%s, got %s.' % (EXPECTED_JS_PACKAGES, deps))
-    print(textwrap.dedent("""
-        * If the new dependencies are intentional, please verify that the
-        * license is one of the allowed licenses (see
-        * config/dependency-license/allowed_licenses.json) and add an entry
-        * for the package (with the license in a comment) to the
-        * EXPECTED_JS_PACKAGES variable in config/presubmits.py.
-        """))
-    return True
-  return False
-
-
 def get_files():
   for root, dirnames, filenames in os.walk("."):
     for filename in filenames:
@@ -347,8 +291,5 @@ if __name__ == "__main__":
   # when we put it here it fails fast before all of the tests are run.
   failed |= verify_flyway_index()
 
-  # Make sure we haven't introduced any javascript dependencies.
-  failed |= verify_javascript_deps()
-
   if failed:
     sys.exit(1)

console-webapp/src/app/history/historyList.component.ts

@@ -56,7 +56,7 @@ export class HistoryListComponent {
       return { main: 'N/A', detail: null };
     }
     const parts = description.split('|');
-    const detail = parts.length > 1 ? parts[1].replace(/_/g, ' ') : null;
+    const detail = parts.length > 1 ? parts[1].replace(/_/g, ' ') : parts[0];
 
     return {
       main: parts[0],

console-webapp/src/app/settings/contact/contact.service.ts

@@ -47,9 +47,9 @@ export interface Contact {
   registrarId?: string;
   faxNumber?: string;
   types: Array<contactType>;
-  visibleInWhoisAsAdmin?: boolean;
-  visibleInWhoisAsTech?: boolean;
-  visibleInDomainWhoisAsAbuse?: boolean;
+  visibleInRdapAsAdmin?: boolean;
+  visibleInRdapAsTech?: boolean;
+  visibleInDomainRdapAsAbuse?: boolean;
 }
 
 export interface ViewReadyContact extends Contact {

console-webapp/src/app/settings/contact/contactDetails.component.html

@@ -57,6 +57,11 @@
           [(ngModel)]="contactService.contactInEdit.emailAddress"
           [ngModelOptions]="{ standalone: true }"
           [disabled]="emailAddressIsDisabled()"
+          [matTooltip]="
+            emailAddressIsDisabled()
+              ? 'Reach out to registry customer support to update email address'
+              : ''
+          "
         />
       </mat-form-field>
 
@@ -84,6 +89,7 @@
       <h1>Contact Type</h1>
       <p class="console-app__contact-required">
         <mat-icon color="accent">error</mat-icon>Required to select at least one
+        (primary contact can't be updated)
       </p>
       <div class="">
         <ng-container
@@ -105,7 +111,7 @@
       <h1>RDAP Preferences</h1>
       <div>
         <mat-checkbox
-          [(ngModel)]="contactService.contactInEdit.visibleInWhoisAsAdmin"
+          [(ngModel)]="contactService.contactInEdit.visibleInRdapAsAdmin"
           [ngModelOptions]="{ standalone: true }"
           >Show in Registrar RDAP record as admin contact</mat-checkbox
         >
@@ -113,7 +119,7 @@
 
       <div>
         <mat-checkbox
-          [(ngModel)]="contactService.contactInEdit.visibleInWhoisAsTech"
+          [(ngModel)]="contactService.contactInEdit.visibleInRdapAsTech"
           [ngModelOptions]="{ standalone: true }"
           >Show in Registrar RDAP record as technical contact</mat-checkbox
         >
@@ -121,7 +127,7 @@
 
       <div>
         <mat-checkbox
-          [(ngModel)]="contactService.contactInEdit.visibleInDomainWhoisAsAbuse"
+          [(ngModel)]="contactService.contactInEdit.visibleInDomainRdapAsAbuse"
           [ngModelOptions]="{ standalone: true }"
           >Show Phone and Email in Domain RDAP Record as registrar abuse contact
           (per CL&D requirements)</mat-checkbox
@@ -183,24 +189,24 @@
         <mat-list-item role="listitem">
           <h2>RDAP Preferences</h2>
         </mat-list-item>
-        @if(contactService.contactInEdit.visibleInWhoisAsAdmin) {
+        @if(contactService.contactInEdit.visibleInRdapAsAdmin) {
         <mat-divider></mat-divider>
         <mat-list-item role="listitem">
           <span class="console-app__list-value"
             >Show in Registrar RDAP record as admin contact</span
           >
         </mat-list-item>
-        } @if(contactService.contactInEdit.visibleInWhoisAsTech) {
+        } @if(contactService.contactInEdit.visibleInRdapAsTech) {
         <mat-divider></mat-divider>
         <mat-list-item
           role="listitem"
-          *ngIf="contactService.contactInEdit.visibleInWhoisAsTech"
+          *ngIf="contactService.contactInEdit.visibleInRdapAsTech"
         >
           <span class="console-app__list-value"
             >Show in Registrar RDAP record as technical contact</span
           >
         </mat-list-item>
-        } @if(contactService.contactInEdit.visibleInDomainWhoisAsAbuse) {
+        } @if(contactService.contactInEdit.visibleInDomainRdapAsAbuse) {
         <mat-divider></mat-divider>
         <mat-list-item role="listitem">
           <span class="console-app__list-value"

console-webapp/src/app/users/userEditForm.component.html

@@ -29,7 +29,7 @@
           ></mat-label
         >
         <mat-select [(ngModel)]="user().role" name="userRole">
-          <mat-option value="PRIMARY_CONTACT">Editor</mat-option>
+          <mat-option value="TECH_CONTACT">Editor</mat-option>
           <mat-option value="ACCOUNT_MANAGER">Viewer</mat-option>
         </mat-select>
       </mat-form-field>

core/build.gradle

@@ -30,7 +30,6 @@ def screenshotsForGoldensDir = "${project.buildDir}/screenshots_for_goldens"
 def newGoldensDir = "${project.buildDir}/new_golden_images"
 def goldensDir =
   "${javaTestDir}/google/registry/webdriver/goldens/chrome-linux"
-def jsDir = "${project.projectDir}/src/main/javascript"
 
 // Tests that fail when running Gradle in a docker container, e. g. when
 // building the release artifacts in Google Cloud Build.
@@ -55,9 +54,6 @@ def dockerIncompatibleTestPatterns = [
 // objects retained by frameworks.
 // TODO(weiminyu): identify cause and fix offending tests.
 def fragileTestPatterns = [
-    // Changes cache timeouts and for some reason appears to have contention
-    // with other tests.
-    "google/registry/whois/WhoisCommandFactoryTest.*",
     // Breaks random other tests when running with standardTests.
     "google/registry/bsa/UploadBsaUnavailableDomainsActionTest.*",
     // Currently changes a global configuration parameter that for some reason

core/src/main/java/google/registry/bsa/BsaValidateAction.java

@@ -28,7 +28,6 @@ import static google.registry.bsa.persistence.Queries.queryMissedRegisteredUnblo
 import static google.registry.bsa.persistence.Queries.queryUnblockableDomainByLabels;
 import static google.registry.model.tld.Tld.isEnrolledWithBsa;
 import static google.registry.model.tld.Tlds.getTldEntitiesOfType;
-import static google.registry.persistence.transaction.TransactionManagerFactory.replicaTm;
 import static google.registry.request.Action.Method.GET;
 import static google.registry.request.Action.Method.POST;
 import static google.registry.util.BatchedStreams.toBatches;
@@ -53,7 +52,6 @@ import google.registry.model.ForeignKeyUtils;
 import google.registry.model.domain.Domain;
 import google.registry.model.tld.Tld;
 import google.registry.model.tld.Tld.TldType;
-import google.registry.persistence.VKey;
 import google.registry.request.Action;
 import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
@@ -185,8 +183,8 @@ public class BsaValidateAction implements Runnable {
     ImmutableList<UnblockableDomain> batch;
     do {
       batch = Queries.batchReadUnblockableDomains(lastRead, transactionBatchSize);
-      ImmutableMap<String, VKey<Domain>> activeDomains =
-          ForeignKeyUtils.load(
+      ImmutableMap<String, Domain> activeDomains =
+          ForeignKeyUtils.loadResources(
               Domain.class,
               batch.stream().map(UnblockableDomain::domainName).collect(toImmutableList()),
               clock.nowUtc());
@@ -201,7 +199,7 @@ public class BsaValidateAction implements Runnable {
   }
 
   Optional<String> verifyDomainStillUnblockableWithReason(
-      UnblockableDomain domain, ImmutableMap<String, VKey<Domain>> activeDomains) {
+      UnblockableDomain domain, ImmutableMap<String, Domain> activeDomains) {
     DateTime now = clock.nowUtc();
     boolean isRegistered = activeDomains.containsKey(domain.domainName());
     boolean isReserved = isReservedDomain(domain.domainName(), now);
@@ -230,10 +228,8 @@ public class BsaValidateAction implements Runnable {
             domain.reason()));
   }
 
-  boolean isStalenessAllowed(VKey<Domain> domainVKey) {
-    Domain domain = bsaQuery(() -> replicaTm().loadByKey(domainVKey));
-    var now = clock.nowUtc();
-    return domain.getCreationTime().plus(maxStaleness).isAfter(now);
+  boolean isStalenessAllowed(Domain domain) {
+    return domain.getCreationTime().plus(maxStaleness).isAfter(clock.nowUtc());
   }
 
   /** Returns unique labels across all block lists in the download specified by {@code jobName}. */

core/src/main/java/google/registry/bsa/persistence/DomainsRefresher.java

@@ -156,7 +156,7 @@ public final class DomainsRefresher {
             .collect(toImmutableSet());
     ImmutableSet<String> currRegistered =
         ImmutableSet.copyOf(
-            ForeignKeyUtils.load(Domain.class, nameToEntity.keySet(), now).keySet());
+            ForeignKeyUtils.loadKeys(Domain.class, nameToEntity.keySet(), now).keySet());
     SetView<String> noLongerRegistered = Sets.difference(prevRegistered, currRegistered);
     SetView<String> newlyRegistered = Sets.difference(currRegistered, prevRegistered);
 

core/src/main/java/google/registry/bsa/persistence/LabelDiffUpdates.java

@@ -145,11 +145,10 @@ public final class LabelDiffUpdates {
 
     ImmutableSet<String> validDomainNames =
         labels.stream()
-            .map(label -> validDomainNamesForLabel(label, idnChecker))
-            .flatMap(x -> x)
+            .flatMap(label -> validDomainNamesForLabel(label, idnChecker))
             .collect(toImmutableSet());
     ImmutableSet<String> registeredDomainNames =
-        ImmutableSet.copyOf(ForeignKeyUtils.load(Domain.class, validDomainNames, now).keySet());
+        ForeignKeyUtils.loadKeys(Domain.class, validDomainNames, now).keySet();
     for (String domain : registeredDomainNames) {
       nonBlockedDomains.add(new UnblockableDomain(domain, Reason.REGISTERED));
       tm().put(BsaUnblockableDomain.of(domain, BsaUnblockableDomain.Reason.REGISTERED));

core/src/main/java/google/registry/config/RegistryConfig.java

@@ -976,17 +976,6 @@ public final class RegistryConfig {
       return config.misc.transientFailureRetries;
     }
 
-    /**
-     * Amount of time public HTTP proxies are permitted to cache our WHOIS responses.
-     *
-     * @see google.registry.whois.WhoisHttpAction
-     */
-    @Provides
-    @Config("whoisHttpExpires")
-    public static Duration provideWhoisHttpExpires() {
-      return Duration.standardDays(1);
-    }
-
     /**
      * Maximum number of results to return for an RDAP search query
      *
@@ -998,39 +987,6 @@ public final class RegistryConfig {
       return 100;
     }
 
-    /**
-     * Redaction text for email address in WHOIS
-     *
-     * @see google.registry.whois.WhoisResponse
-     */
-    @Provides
-    @Config("whoisRedactedEmailText")
-    public static String provideWhoisRedactedEmailText(RegistryConfigSettings config) {
-      return config.registryPolicy.whoisRedactedEmailText;
-    }
-
-    /**
-     * Disclaimer displayed at the end of WHOIS query results.
-     *
-     * @see google.registry.whois.WhoisResponse
-     */
-    @Provides
-    @Config("whoisDisclaimer")
-    public static String provideWhoisDisclaimer(RegistryConfigSettings config) {
-      return config.registryPolicy.whoisDisclaimer;
-    }
-
-    /**
-     * Message template for whois response when queried domain is blocked by BSA.
-     *
-     * @see google.registry.whois.WhoisResponse
-     */
-    @Provides
-    @Config("domainBlockedByBsaTemplate")
-    public static String provideDomainBlockedByBsaTemplate(RegistryConfigSettings config) {
-      return config.registryPolicy.domainBlockedByBsaTemplate;
-    }
-
     /**
      * Maximum QPS for the Google Cloud Monitoring V3 (aka Stackdriver) API. The QPS limit can be
      * adjusted by contacting Cloud Support.
@@ -1105,12 +1061,6 @@ public final class RegistryConfig {
       return config.registryPolicy.customLogicFactoryClass;
     }
 
-    @Provides
-    @Config("whoisCommandFactoryClass")
-    public static String provideWhoisCommandFactoryClass(RegistryConfigSettings config) {
-      return config.registryPolicy.whoisCommandFactoryClass;
-    }
-
     @Provides
     @Config("dnsCountQueryCoordinatorClass")
     public static String dnsCountQueryCoordinatorClass(RegistryConfigSettings config) {
@@ -1606,12 +1556,7 @@ public final class RegistryConfig {
     return CONFIG_SETTINGS.get().gSuite.outgoingEmailDisplayName;
   }
 
-  /**
-   * Returns default WHOIS server to use when {@code Registrar#getWhoisServer()} is {@code null}.
-   *
-   * @see "google.registry.whois.DomainWhoisResponse"
-   * @see "google.registry.whois.RegistrarWhoisResponse"
-   */
+  /** Returns default WHOIS server to use when {@code Registrar#getWhoisServer()} is null. */
   public static String getDefaultRegistrarWhoisServer() {
     return CONFIG_SETTINGS.get().registryPolicy.defaultRegistrarWhoisServer;
   }

core/src/main/java/google/registry/config/RegistryConfigSettings.java

@@ -90,7 +90,6 @@ public class RegistryConfigSettings {
     public String contactAndHostRoidSuffix;
     public String productName;
     public String customLogicFactoryClass;
-    public String whoisCommandFactoryClass;
     public String dnsCountQueryCoordinatorClass;
     public int contactAutomaticTransferDays;
     public String greetingServerId;
@@ -102,9 +101,6 @@ public class RegistryConfigSettings {
     public String registryAdminClientId;
     public String premiumTermsExportDisclaimer;
     public String reservedTermsExportDisclaimer;
-    public String whoisRedactedEmailText;
-    public String whoisDisclaimer;
-    public String domainBlockedByBsaTemplate;
     public String rdapTos;
     public String rdapTosStaticUrl;
     public String registryName;

core/src/main/java/google/registry/config/files/default-config.yaml

@@ -65,10 +65,6 @@ registryPolicy:
   # See flows/custom/CustomLogicFactory.java
   customLogicFactoryClass: google.registry.flows.custom.CustomLogicFactory
 
-  # WHOIS command factory fully-qualified class name.
-  # See whois/WhoisCommandFactory.java
-  whoisCommandFactoryClass: google.registry.whois.WhoisCommandFactory
-
   # Custom logic class for handling DNS query count reporting for ICANN.
   # See reporting/icann/DnsCountQueryCoordinator.java
   dnsCountQueryCoordinatorClass: google.registry.reporting.icann.DummyDnsCountQueryCoordinator
@@ -114,31 +110,6 @@ registryPolicy:
     to publish. This list is subject to change. The most up-to-date source
     is always the registry itself, by sending domain check EPP commands.
 
-  # Redaction text for email address in WHOIS
-  whoisRedactedEmailText: |
-    Please query the WHOIS server of the owning registrar identified in this
-    output for information on how to contact the Registrant, Admin, or Tech
-    contact of the queried domain name.
-
-  # Disclaimer at the top of WHOIS results.
-  whoisDisclaimer: |
-    WHOIS information is provided by the registry solely for query-based,
-    informational purposes. Any information provided is "as is" without any
-    guarantee of accuracy. You may not use such information to (a) allow,
-    enable, or otherwise support the transmission of mass unsolicited,
-    commercial advertising or solicitations; (b) enable high volume, automated,
-    electronic processes that access the registry's systems or any
-    ICANN-Accredited Registrar, except as reasonably necessary to register
-    domain names or modify existing registrations; or (c) engage in or support
-    unlawful behavior. We reserve the right to restrict or deny your access to
-    the WHOIS database, and may modify these terms at any time.
-
-  # BSA blocked domain name template.
-  domainBlockedByBsaTemplate: |
-    Domain Name: %s
-    >>> This name is not available for registration.
-    >>> This name has been blocked by a GlobalBlock service.
-
   # RDAP Terms of Service text displayed at the /rdap/help/tos endpoint.
   rdapTos: >
     By querying our Domain Database as part of the RDAP pilot program (RDAP

core/src/main/java/google/registry/config/files/tld/example.yaml

@@ -5,7 +5,6 @@
 
 addGracePeriodLength: "PT432000S"
 allowedFullyQualifiedHostNames: []
-allowedRegistrantContactIds: []
 anchorTenantAddGracePeriodLength: "PT2592000S"
 autoRenewGracePeriodLength: "PT3888000S"
 automaticTransferLength: "PT432000S"

core/src/main/java/google/registry/dns/PublishDnsUpdatesAction.java

@@ -25,7 +25,6 @@ import static google.registry.dns.DnsModule.PARAM_REFRESH_REQUEST_TIME;
 import static google.registry.dns.DnsUtils.DNS_PUBLISH_PUSH_QUEUE_NAME;
 import static google.registry.dns.DnsUtils.requestDomainDnsRefresh;
 import static google.registry.dns.DnsUtils.requestHostDnsRefresh;
-import static google.registry.model.EppResourceUtils.loadByForeignKey;
 import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
 import static google.registry.request.Action.Method.POST;
 import static google.registry.request.RequestParameters.PARAM_TLD;
@@ -46,6 +45,7 @@ import google.registry.dns.DnsMetrics.CommitStatus;
 import google.registry.dns.DnsMetrics.PublishStatus;
 import google.registry.dns.writer.DnsWriter;
 import google.registry.groups.GmailClient;
+import google.registry.model.ForeignKeyUtils;
 import google.registry.model.domain.Domain;
 import google.registry.model.host.Host;
 import google.registry.model.registrar.Registrar;
@@ -237,7 +237,8 @@ public final class PublishDnsUpdatesAction implements Runnable, Callable<Void> {
             .findFirst()
             .ifPresent(
                 dn -> {
-                  Optional<Domain> domain = loadByForeignKey(Domain.class, dn, clock.nowUtc());
+                  Optional<Domain> domain =
+                      ForeignKeyUtils.loadResource(Domain.class, dn, clock.nowUtc());
                   if (domain.isPresent()) {
                     notifyWithEmailAboutDnsUpdateFailure(
                         domain.get().getCurrentSponsorRegistrarId(), dn, false);
@@ -250,7 +251,8 @@ public final class PublishDnsUpdatesAction implements Runnable, Callable<Void> {
             .findFirst()
             .ifPresent(
                 hn -> {
-                  Optional<Host> host = loadByForeignKey(Host.class, hn, clock.nowUtc());
+                  Optional<Host> host =
+                      ForeignKeyUtils.loadResource(Host.class, hn, clock.nowUtc());
                   if (host.isPresent()) {
                     notifyWithEmailAboutDnsUpdateFailure(
                         host.get().getPersistedCurrentSponsorRegistrarId(), hn, true);

core/src/main/java/google/registry/dns/RefreshDnsAction.java

@@ -16,12 +16,12 @@ package google.registry.dns;
 
 import static google.registry.dns.DnsUtils.requestDomainDnsRefresh;
 import static google.registry.dns.DnsUtils.requestHostDnsRefresh;
-import static google.registry.model.EppResourceUtils.loadByForeignKey;
 import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
 
 import google.registry.dns.DnsUtils.TargetType;
 import google.registry.model.EppResource;
 import google.registry.model.EppResource.ForeignKeyedEppResource;
+import google.registry.model.ForeignKeyUtils;
 import google.registry.model.annotations.ExternalMessagingName;
 import google.registry.model.domain.Domain;
 import google.registry.model.host.Host;
@@ -79,7 +79,7 @@ public final class RefreshDnsAction implements Runnable {
 
   private <T extends EppResource & ForeignKeyedEppResource>
       T loadAndVerifyExistence(Class<T> clazz, String foreignKey) {
-    return loadByForeignKey(clazz, foreignKey, clock.nowUtc())
+    return ForeignKeyUtils.loadResource(clazz, foreignKey, clock.nowUtc())
         .orElseThrow(
             () ->
                 new NotFoundException(

core/src/main/java/google/registry/dns/writer/clouddns/CloudDnsWriter.java

@@ -17,7 +17,6 @@ package google.registry.dns.writer.clouddns;
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.collect.ImmutableSet.toImmutableSet;
 import static google.registry.dns.DnsUtils.getDnsAPlusAAAATtlForHost;
-import static google.registry.model.EppResourceUtils.loadByForeignKey;
 import static google.registry.util.DomainNameUtils.getSecondLevelDomain;
 
 import com.google.api.client.googleapis.json.GoogleJsonError;
@@ -37,6 +36,7 @@ import google.registry.config.RegistryConfig.Config;
 import google.registry.dns.writer.BaseDnsWriter;
 import google.registry.dns.writer.DnsWriter;
 import google.registry.dns.writer.DnsWriterZone;
+import google.registry.model.ForeignKeyUtils;
 import google.registry.model.domain.Domain;
 import google.registry.model.domain.secdns.DomainDsData;
 import google.registry.model.host.Host;
@@ -123,7 +123,8 @@ public class CloudDnsWriter extends BaseDnsWriter {
     String absoluteDomainName = getAbsoluteHostName(domainName);
 
     // Load the target domain. Note that it can be absent if this domain was just deleted.
-    Optional<Domain> domain = loadByForeignKey(Domain.class, domainName, clock.nowUtc());
+    Optional<Domain> domain =
+        ForeignKeyUtils.loadResource(Domain.class, domainName, clock.nowUtc());
 
     // Return early if no DNS records should be published.
     // desiredRecordsBuilder is populated with an empty set to indicate that all existing records
@@ -189,7 +190,7 @@ public class CloudDnsWriter extends BaseDnsWriter {
     // Load the target host. Note that it can be absent if this host was just deleted.
     // desiredRecords is populated with an empty set to indicate that all existing records
     // should be deleted.
-    Optional<Host> host = loadByForeignKey(Host.class, hostName, clock.nowUtc());
+    Optional<Host> host = ForeignKeyUtils.loadResource(Host.class, hostName, clock.nowUtc());
 
     // Return early if the host is deleted.
     if (host.isEmpty()) {

core/src/main/java/google/registry/dns/writer/dnsupdate/DnsUpdateWriter.java

@@ -19,7 +19,6 @@ import static com.google.common.base.Verify.verify;
 import static com.google.common.collect.Sets.intersection;
 import static com.google.common.collect.Sets.union;
 import static google.registry.dns.DnsUtils.getDnsAPlusAAAATtlForHost;
-import static google.registry.model.EppResourceUtils.loadByForeignKey;
 
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
@@ -28,6 +27,7 @@ import com.google.common.net.InternetDomainName;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.dns.writer.BaseDnsWriter;
 import google.registry.dns.writer.DnsWriterZone;
+import google.registry.model.ForeignKeyUtils;
 import google.registry.model.domain.Domain;
 import google.registry.model.domain.secdns.DomainDsData;
 import google.registry.model.host.Host;
@@ -129,7 +129,8 @@ public class DnsUpdateWriter extends BaseDnsWriter {
    *     this domain refresh request
    */
   private void publishDomain(String domainName, String requestingHostName) {
-    Optional<Domain> domainOptional = loadByForeignKey(Domain.class, domainName, clock.nowUtc());
+    Optional<Domain> domainOptional =
+        ForeignKeyUtils.loadResource(Domain.class, domainName, clock.nowUtc());
     update.delete(toAbsoluteName(domainName), Type.ANY);
     // If the domain is now deleted, then don't update DNS for it.
     if (domainOptional.isPresent()) {
@@ -218,7 +219,7 @@ public class DnsUpdateWriter extends BaseDnsWriter {
   private void addInBailiwickNameServerSet(Domain domain, Update update) {
     for (String hostName :
         intersection(domain.loadNameserverHostNames(), domain.getSubordinateHosts())) {
-      Optional<Host> host = loadByForeignKey(Host.class, hostName, clock.nowUtc());
+      Optional<Host> host = ForeignKeyUtils.loadResource(Host.class, hostName, clock.nowUtc());
       checkState(host.isPresent(), "Host %s cannot be loaded", hostName);
       update.add(makeAddressSet(host.get()));
       update.add(makeV6AddressSet(host.get()));

core/src/main/java/google/registry/env/alpha/backend/WEB-INF/appengine-web.xml

@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>backend</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>100</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="alpha"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/alpha/bsa/WEB-INF/appengine-web.xml

@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>bsa</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>100</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="alpha"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <!-- Enable external traffic to go through VPC, required for static ip -->
-  <vpc-access-connector>
-    <name>projects/domain-registry-alpha/locations/us-central1/connectors/appengine-connector</name>
-    <egress-setting>all-traffic</egress-setting>
-  </vpc-access-connector>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/alpha/default/WEB-INF/appengine-web.xml

@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>default</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>8</max-instances>
-    <idle-timeout>30m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="alpha"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-    <include path="/registrar/*.html" expiration="1m"/>
-
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/alpha/pubapi/WEB-INF/appengine-web.xml

@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>pubapi</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>8</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="alpha"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-    <include path="/assets/js/**" expiration="1m"/>
-    <include path="/assets/css/**" expiration="1m"/>
-    <include path="/assets/images/**" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/alpha/tools/WEB-INF/appengine-web.xml

@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>tools</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>5</max-instances>
-    <idle-timeout>5m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="alpha"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-    <include path="/assets/js/**" expiration="1m"/>
-    <include path="/assets/css/**" expiration="1m"/>
-    <include path="/assets/images/**" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/common/META-INF/appengine-application.xml

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="no"?>
-<appengine-application xmlns="http://appengine.google.com/ns/1.0">
-  <application>domain-registry</application>
-</appengine-application>

core/src/main/java/google/registry/env/common/META-INF/application.xml

@@ -1,46 +0,0 @@
-<?xml version="1.0"
-encoding="UTF-8"?>
-
-<application
-  xmlns="http://java.sun.com/xml/ns/javaee"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
-                      http://java.sun.com/xml/ns/javaee/application_5.xsd"
-  version="5">
-
-  <description>Google Registry</description>
-  <display-name>Google Registry</display-name>
-
-  <!-- Modules -->
-  <!-- The default module should be listed first -->
-  <module>
-    <web>
-      <web-uri>default</web-uri>
-      <context-root>default</context-root>
-    </web>
-  </module>
-  <module>
-    <web>
-      <web-uri>pubapi</web-uri>
-      <context-root>pubapi</context-root>
-    </web>
-  </module>
-  <module>
-    <web>
-      <web-uri>backend</web-uri>
-      <context-root>backend</context-root>
-    </web>
-  </module>
-  <module>
-    <web>
-      <web-uri>bsa</web-uri>
-      <context-root>bsa</context-root>
-    </web>
-  </module>
-  <module>
-    <web>
-      <web-uri>tools</web-uri>
-      <context-root>tools</context-root>
-    </web>
-  </module>
-</application>

core/src/main/java/google/registry/env/common/backend/WEB-INF/logging.properties

@@ -1,17 +0,0 @@
-# A default java.util.logging configuration.
-# (All App Engine logging is through java.util.logging by default).
-#
-# To use this configuration, copy it into your application's WEB-INF
-# folder and add the following to your appengine-web.xml:
-#
-# <system-properties>
-#   <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
-# </system-properties>
-#
-
-# Set the default logging level for all loggers to INFO.
-.level = INFO
-
-# Turn off logging in Hibernate classes for misleading ERROR-level logs
-org.hibernate.orm.jdbc.batch.level=OFF
-org.hibernate.engine.jdbc.spi.SqlExceptionHelper.level=OFF

core/src/main/java/google/registry/env/common/backend/WEB-INF/web.xml

@@ -1,333 +0,0 @@
-<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
-  version="6.0">
-  <!-- Servlets -->
-
-  <!-- Servlet for injected backends actions -->
-  <servlet>
-    <display-name>BackendServlet</display-name>
-    <servlet-name>backend-servlet</servlet-name>
-    <servlet-class>google.registry.module.backend.BackendServlet</servlet-class>
-    <load-on-startup>1</load-on-startup>
-  </servlet>
-
-  <!-- RDE -->
-
-  <!--
-    Responsible for scanning the database to create a full deposit for a single TLD
-    and streaming it to cloud storage. Requests are sent here by App Engine after
-    `RdeCreateCronServlet` enqueues a task specifying a URL that points to this servlet.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/rdeStaging</url-pattern>
-  </servlet-mapping>
-
-  <!--
-    Once `rdeCreateFullCron` finishes writing a deposit file to cloud storage, it'll
-    launch this task with the cloud filename so it can be uploaded to Iron Mountain
-    via SFTP. The file is deleted once the upload completes. This should be run via
-    `rde-upload-backend`.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/rdeUpload</url-pattern>
-  </servlet-mapping>
-
-  <!-- Sends an XML RDE report to ICANN's HTTP server after rdeUploadTask finishes. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/rdeReport</url-pattern>
-  </servlet-mapping>
-
-  <!--
-    Bulk Registration Data Access. This task creates a thin escrow deposit
-    and saves it to cloud storage, where a separate script owned by the SREs
-    uploads it to ICANN.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/brdaCopy</url-pattern>
-  </servlet-mapping>
-
-  <!-- Billing -->
-
-  <!--
-    Generates the invoice CSV for the month, which we send to billing to charge
-    registrars for their registrations.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/generateInvoices</url-pattern>
-  </servlet-mapping>
-
-  <!--
-    Emails the month's invoice CSV to the internal billing team, and publishes
-    the detail reports to the individual registrars' drive accounts.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/publishInvoices</url-pattern>
-  </servlet-mapping>
-
-  <!--
-    Copies invoice detail reports from GCS to the associated registrar's Drive folder.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/copyDetailReports</url-pattern>
-  </servlet-mapping>
-
-  <!-- ICANN Monthly Reporting -->
-
-  <!--
-    Monthly ICANN transaction and activity reports. This task generates report
-    files (in CSV format) and stores them in GCS under
-    gs://domain-registry-reporting/icann/monthly/YYYY-MM
-    by default.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/icannReportingStaging</url-pattern>
-  </servlet-mapping>
-
-  <!--
-    Monthly ICANN transaction and activity reports. This task uploads the generated
-    report files (in CSV format) via an HTTP PUT to ICANN's endpoint.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/icannReportingUpload</url-pattern>
-  </servlet-mapping>
-
-  <!--
-    Generates the Spec11 report for the month, storing it on GCS.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/generateSpec11</url-pattern>
-  </servlet-mapping>
-
-  <!--
-    Publishes the Spec11 report for the month, emailing registrars about their
-    registrations which were flagged by the SafeBrowsing API.
-  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/publishSpec11</url-pattern>
-  </servlet-mapping>
-
-  <!-- Trademark Clearinghouse -->
-
-  <!-- Downloads TMCH DNL data from MarksDB. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/tmchDnl</url-pattern>
-  </servlet-mapping>
-
-  <!-- Downloads TMCH SMDRL data from MarksDB. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/tmchSmdrl</url-pattern>
-  </servlet-mapping>
-
-  <!-- Downloads TMCH CRL data from MarksDB. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/tmchCrl</url-pattern>
-  </servlet-mapping>
-
-  <!-- Reads the LORDN queues and uploads CSV data for sunrise and claims marks to MarksDB. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/nordnUpload</url-pattern>
-  </servlet-mapping>
-
-  <!-- Verifies upload of LORDN data to MarksDB. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/nordnVerify</url-pattern>
-  </servlet-mapping>
-
-  <!-- Reads the DNS refresh requests and kick off the appropriate tasks to update zone. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/readDnsRefreshRequests</url-pattern>
-  </servlet-mapping>
-
-  <!-- Publishes DNS updates. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/publishDnsUpdates</url-pattern>
-  </servlet-mapping>
-
-  <!-- Manually refreshes DNS information. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/dnsRefresh</url-pattern>
-  </servlet-mapping>
-
-  <!-- Fans out a cron task over an adjustable range of TLDs. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/cron/fanout</url-pattern>
-  </servlet-mapping>
-
-  <!-- Syncs registrars to the registrar spreadsheet.  -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/syncRegistrarsSheet</url-pattern>
-  </servlet-mapping>
-
-  <!-- Exports TLD premium terms. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/exportPremiumTerms</url-pattern>
-  </servlet-mapping>
-
-  <!-- Exports TLD reserved terms. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/exportReservedTerms</url-pattern>
-  </servlet-mapping>
-
-  <!-- Syncs RegistrarContact changes to Google Groups. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/syncGroupMembers</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/exportDomainLists</url-pattern>
-  </servlet-mapping>
-
-  <!--  Action to delete all prober data. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/deleteProberData</url-pattern>
-  </servlet-mapping>
-
-  <!--  Action to delete load test data. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/deleteLoadTestData</url-pattern>
-  </servlet-mapping>
-
-  <!--  Dataflow pipeline to re-save all EPP resources. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/resaveAllEppResourcesPipeline</url-pattern>
-  </servlet-mapping>
-
-  <!--  Reread all Registrar RDAP Base Urls from the ICANN endpoint. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/updateRegistrarRdapBaseUrls</url-pattern>
-  </servlet-mapping>
-
-  <!--  Action to re-save a given entity. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/resaveEntity</url-pattern>
-  </servlet-mapping>
-
-  <!-- Enqueues DNS update tasks following a host rename. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/refreshDnsOnHostRename</url-pattern>
-  </servlet-mapping>
-
-  <!-- Action to expand BillingRecurrences into BillingEvents. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/expandBillingRecurrences</url-pattern>
-  </servlet-mapping>
-
-  <!-- Background action to delete domains past end of autorenewal. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/deleteExpiredDomains</url-pattern>
-  </servlet-mapping>
-
-  <!-- Background action to send notification emails to registrars with expiring certificate. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/sendExpiringCertificateNotificationEmail</url-pattern>
-  </servlet-mapping>
-
-  <!-- Action to automatically re-lock a domain after unlocking it -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/relockDomain</url-pattern>
-  </servlet-mapping>
-
-  <!-- Background action to wipe out PII fields of ContactHistory entities that
-have been in the database for a certain period of time. -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/wipeOutContactHistoryPii</url-pattern>
-  </servlet-mapping>
-
-  <!-- Action to wipeout Cloud SQL data -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/wipeOutCloudSql</url-pattern>
-  </servlet-mapping>
-
-  <!-- Action to execute canned scripts -->
-  <servlet-mapping>
-    <servlet-name>backend-servlet</servlet-name>
-    <url-pattern>/_dr/task/executeCannedScript</url-pattern>
-  </servlet-mapping>
-
-  <!-- Security config -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Internal</web-resource-name>
-      <description>
-        Admin-only internal section. Requests for paths covered by the URL patterns below will be
-        checked for a logged-in user account that's allowed to access the AppEngine admin console
-        (NOTE: this includes Editor/Viewer permissions in addition to Owner and the new IAM
-        App Engine Admin role. See https://cloud.google.com/appengine/docs/java/access-control
-        specifically the "Access handlers that have a login:admin restriction" line.)
-
-        TODO(b/28219927): lift some of these restrictions so that we can allow OAuth authentication
-        for endpoints that need to be accessed by open-source automated processes.
-      </description>
-
-      <!-- Internal AppEngine endpoints.  The '_ah' is short for app hosting.  -->
-      <url-pattern>/_ah/*</url-pattern>
-
-      <!-- Registrar console (should not be available on non-default module). -->
-      <url-pattern>/registrar*</url-pattern>
-
-      <!-- Verbatim JavaScript sources (only visible to admins for debugging). -->
-      <url-pattern>/assets/sources/*</url-pattern>
-
-    </web-resource-collection>
-    <auth-constraint>
-      <role-name>admin</role-name>
-    </auth-constraint>
-
-    <!-- Repeated here since catch-all rule below is not inherited. -->
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-
-  <!-- Require TLS on all requests. -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Secure</web-resource-name>
-      <description>
-        Require encryption for all paths. http URLs will be redirected to https.
-      </description>
-      <url-pattern>/*</url-pattern>
-    </web-resource-collection>
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-</web-app>

core/src/main/java/google/registry/env/common/bsa/WEB-INF/logging.properties

@@ -1,17 +0,0 @@
-# A default java.util.logging configuration.
-# (All App Engine logging is through java.util.logging by default).
-#
-# To use this configuration, copy it into your application's WEB-INF
-# folder and add the following to your appengine-web.xml:
-#
-# <system-properties>
-#   <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
-# </system-properties>
-#
-
-# Set the default logging level for all loggers to INFO.
-.level = INFO
-
-# Turn off logging in Hibernate classes for misleading ERROR-level logs
-org.hibernate.orm.jdbc.batch.level=OFF
-org.hibernate.engine.jdbc.spi.SqlExceptionHelper.level=OFF

core/src/main/java/google/registry/env/common/bsa/WEB-INF/web.xml

@@ -1,87 +0,0 @@
-<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
-  version="6.0">
-  <!-- Servlets -->
-
-  <!-- Servlet for injected backends actions -->
-  <servlet>
-    <display-name>BsaServlet</display-name>
-    <servlet-name>bsa-servlet</servlet-name>
-    <servlet-class>google.registry.module.bsa.BsaServlet</servlet-class>
-    <load-on-startup>1</load-on-startup>
-  </servlet>
-
-  <!-- Download action -->
-  <servlet-mapping>
-    <servlet-name>bsa-servlet</servlet-name>
-    <url-pattern>/_dr/task/bsaDownload</url-pattern>
-  </servlet-mapping>
-
-  <!-- Refresh action -->
-  <servlet-mapping>
-    <servlet-name>bsa-servlet</servlet-name>
-    <url-pattern>/_dr/task/bsaRefresh</url-pattern>
-  </servlet-mapping>
-
-  <!-- Refresh action -->
-  <servlet-mapping>
-    <servlet-name>bsa-servlet</servlet-name>
-    <url-pattern>/_dr/task/bsaValidate</url-pattern>
-  </servlet-mapping>
-
-  <!-- Upload unavailable domains to BSA action -->
-  <servlet-mapping>
-    <servlet-name>bsa-servlet</servlet-name>
-    <url-pattern>/_dr/task/uploadBsaUnavailableNames</url-pattern>
-  </servlet-mapping>
-
-  <!-- Security config -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Internal</web-resource-name>
-      <description>
-        Admin-only internal section. Requests for paths covered by the URL patterns below will be
-        checked for a logged-in user account that's allowed to access the AppEngine admin console
-        (NOTE: this includes Editor/Viewer permissions in addition to Owner and the new IAM
-        App Engine Admin role. See https://cloud.google.com/appengine/docs/java/access-control
-        specifically the "Access handlers that have a login:admin restriction" line.)
-
-        TODO(b/28219927): lift some of these restrictions so that we can allow OAuth authentication
-        for endpoints that need to be accessed by open-source automated processes.
-      </description>
-
-      <!-- Internal AppEngine endpoints.  The '_ah' is short for app hosting.  -->
-      <url-pattern>/_ah/*</url-pattern>
-
-      <!-- Registrar console (should not be available on non-default module). -->
-      <url-pattern>/registrar*</url-pattern>
-
-      <!-- Verbatim JavaScript sources (only visible to admins for debugging). -->
-      <url-pattern>/assets/sources/*</url-pattern>
-
-    </web-resource-collection>
-    <auth-constraint>
-      <role-name>admin</role-name>
-    </auth-constraint>
-
-    <!-- Repeated here since catch-all rule below is not inherited. -->
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-
-  <!-- Require TLS on all requests. -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Secure</web-resource-name>
-      <description>
-        Require encryption for all paths. http URLs will be redirected to https.
-      </description>
-      <url-pattern>/*</url-pattern>
-    </web-resource-collection>
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-</web-app>

core/src/main/java/google/registry/env/common/default/WEB-INF/dispatch.xml

@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<dispatch-entries>
-  <!-- Send all public-facing unauthenticated traffic to the pubapi service. -->
-  <dispatch>
-    <url>*/rdap/*</url>
-    <module>pubapi</module>
-  </dispatch>
-  <dispatch>
-    <url>*/whois/*</url>
-    <module>pubapi</module>
-  </dispatch>
-  <dispatch>
-    <url>*/_dr/whois</url>
-    <module>pubapi</module>
-  </dispatch>
-  <dispatch>
-    <url>*/check</url>
-    <module>pubapi</module>
-  </dispatch>
-  <dispatch>
-    <url>*/console/*</url>
-    <module>console</module>
-  </dispatch>
-  <dispatch>
-    <url>*/console</url>
-    <module>console</module>
-  </dispatch>
-</dispatch-entries>

core/src/main/java/google/registry/env/common/default/WEB-INF/logging.properties

@@ -1,17 +0,0 @@
-# A default java.util.logging configuration.
-# (All App Engine logging is through java.util.logging by default).
-#
-# To use this configuration, copy it into your application's WEB-INF
-# folder and add the following to your appengine-web.xml:
-#
-# <system-properties>
-#   <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
-# </system-properties>
-#
-
-# Set the default logging level for all loggers to INFO.
-.level = INFO
-
-# Turn off logging in Hibernate classes for misleading ERROR-level logs
-org.hibernate.orm.jdbc.batch.level=OFF
-org.hibernate.engine.jdbc.spi.SqlExceptionHelper.level=OFF

core/src/main/java/google/registry/env/common/default/WEB-INF/web.xml

@@ -1,66 +0,0 @@
-<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
-  version="6.0">
-  <!-- Servlets -->
-
-  <!-- Servlet for injected frontend actions -->
-  <servlet>
-    <display-name>FrontendServlet</display-name>
-    <servlet-name>frontend-servlet</servlet-name>
-    <servlet-class>google.registry.module.frontend.FrontendServlet</servlet-class>
-    <load-on-startup>1</load-on-startup>
-  </servlet>
-
-  <!-- The primary EPP endpoint for the Registry, which accepts EPP requests from our TLS proxy. -->
-  <servlet-mapping>
-    <servlet-name>frontend-servlet</servlet-name>
-    <url-pattern>/_dr/epp</url-pattern>
-  </servlet-mapping>
-
-  <!-- Registrar console endpoints -->
-  <servlet-mapping>
-    <servlet-name>frontend-servlet</servlet-name>
-    <url-pattern>/console-api/*</url-pattern>
-  </servlet-mapping>
-
-  <!-- Security config -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Internal</web-resource-name>
-      <description>
-        Admin-only internal section.  Requests for paths covered by the URL patterns below will be
-        checked for a logged-in user account that's allowed to access the AppEngine admin console
-        (NOTE: this includes Editor/Viewer permissions in addition to Owner and the new IAM
-        App Engine Admin role. See https://cloud.google.com/appengine/docs/java/access-control
-        specifically the "Access handlers that have a login:admin restriction" line.)
-
-        TODO(b/28219927): lift some of these restrictions so that we can allow OAuth authentication
-        for endpoints that need to be accessed by open-source automated processes.
-      </description>
-      <!-- Internal AppEngine endpoints.  The '_ah' is short for app hosting.  -->
-      <url-pattern>/_ah/*</url-pattern>
-    </web-resource-collection>
-    <auth-constraint>
-      <role-name>admin</role-name>
-    </auth-constraint>
-    <!-- Repeated here since catch-all rule below is not inherited. -->
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-
-  <!-- Require TLS on all requests. -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Secure</web-resource-name>
-      <description>
-        Require encryption for all paths. http URLs will be redirected to https.
-      </description>
-      <url-pattern>/*</url-pattern>
-    </web-resource-collection>
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-</web-app>

core/src/main/java/google/registry/env/common/pubapi/WEB-INF/logging.properties

@@ -1,17 +0,0 @@
-# A default java.util.logging configuration.
-# (All App Engine logging is through java.util.logging by default).
-#
-# To use this configuration, copy it into your application's WEB-INF
-# folder and add the following to your appengine-web.xml:
-#
-# <system-properties>
-#   <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
-# </system-properties>
-#
-
-# Set the default logging level for all loggers to INFO.
-.level = INFO
-
-# Turn off logging in Hibernate classes for misleading ERROR-level logs
-org.hibernate.orm.jdbc.batch.level=OFF
-org.hibernate.engine.jdbc.spi.SqlExceptionHelper.level=OFF

core/src/main/java/google/registry/env/common/pubapi/WEB-INF/web.xml

@@ -1,107 +0,0 @@
-<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
-  version="6.0">
-  <!-- Servlets -->
-
-  <!-- Servlet for injected frontend actions -->
-  <servlet>
-    <display-name>PubApiServlet</display-name>
-    <servlet-name>pubapi-servlet</servlet-name>
-    <servlet-class>google.registry.module.pubapi.PubApiServlet</servlet-class>
-    <load-on-startup>1</load-on-startup>
-  </servlet>
-
-  <!-- HTTP WHOIS. -->
-  <servlet-mapping>
-    <servlet-name>pubapi-servlet</servlet-name>
-    <url-pattern>/whois/*</url-pattern>
-  </servlet-mapping>
-
-  <!-- Protocol WHOIS. -->
-  <servlet-mapping>
-    <servlet-name>pubapi-servlet</servlet-name>
-    <url-pattern>/_dr/whois</url-pattern>
-  </servlet-mapping>
-
-  <!-- RDAP (new WHOIS). -->
-  <servlet-mapping>
-    <servlet-name>pubapi-servlet</servlet-name>
-    <url-pattern>/rdap/*</url-pattern>
-  </servlet-mapping>
-
-  <!-- Public API to do availability checks -->
-  <servlet-mapping>
-    <servlet-name>pubapi-servlet</servlet-name>
-    <url-pattern>/check</url-pattern>
-  </servlet-mapping>
-
-  <!-- Security config -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Internal</web-resource-name>
-      <description>
-        Admin-only internal section.  Requests for paths covered by the URL patterns below will be
-        checked for a logged-in user account that's allowed to access the AppEngine admin console
-        (NOTE: this includes Editor/Viewer permissions in addition to Owner and the new IAM
-        App Engine Admin role.  See https://cloud.google.com/appengine/docs/java/access-control
-        specifically the "Access handlers that have a login:admin restriction" line.)
-
-        TODO(b/28219927): lift some of these restrictions so that we can allow OAuth authentication
-        for endpoints that need to be accessed by open-source automated processes.
-      </description>
-
-      <!-- Internal AppEngine endpoints.  The '_ah' is short for app hosting.  -->
-      <url-pattern>/_ah/*</url-pattern>
-
-      <!-- Verbatim JavaScript sources (only visible to admins for debugging). -->
-      <url-pattern>/assets/sources/*</url-pattern>
-
-      <!-- TODO(b/26776367): Move these files to /assets/sources. -->
-      <url-pattern>/assets/js/registrar_bin.js.map</url-pattern>
-      <url-pattern>/assets/js/registrar_dbg.js</url-pattern>
-      <url-pattern>/assets/css/registrar_dbg.css</url-pattern>
-
-    </web-resource-collection>
-    <auth-constraint>
-      <role-name>admin</role-name>
-    </auth-constraint>
-
-    <!-- Repeated here since catch-all rule below is not inherited. -->
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Registrar console</web-resource-name>
-      <description>
-        Registrar console requires user login.  This is in addition to the
-        code-level "requireLogin" configuration on individual @Actions.
-      </description>
-      <url-pattern>/registrar*</url-pattern>
-    </web-resource-collection>
-    <auth-constraint>
-      <role-name>*</role-name>
-    </auth-constraint>
-    <!-- Repeated here since catch-all rule below is not inherited. -->
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-
-  <!-- Require TLS on all requests. -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Secure</web-resource-name>
-      <description>
-        Require encryption for all paths. http URLs will be redirected to https.
-      </description>
-      <url-pattern>/*</url-pattern>
-    </web-resource-collection>
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-</web-app>

core/src/main/java/google/registry/env/common/tools/WEB-INF/logging.properties

@@ -1,17 +0,0 @@
-# A default java.util.logging configuration.
-# (All App Engine logging is through java.util.logging by default).
-#
-# To use this configuration, copy it into your application's WEB-INF
-# folder and add the following to your appengine-web.xml:
-#
-# <system-properties>
-#   <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
-# </system-properties>
-#
-
-# Set the default logging level for all loggers to INFO.
-.level = INFO
-
-# Turn off logging in Hibernate classes for misleading ERROR-level logs
-org.hibernate.orm.jdbc.batch.level=OFF
-org.hibernate.engine.jdbc.spi.SqlExceptionHelper.level=OFF

core/src/main/java/google/registry/env/common/tools/WEB-INF/web.xml

@@ -1,120 +0,0 @@
-<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
-  version="6.0">
-  <!-- Servlets -->
-
-  <!-- Servlet for injected tools actions -->
-  <servlet>
-    <display-name>ToolsServlet</display-name>
-    <servlet-name>tools-servlet</servlet-name>
-    <servlet-class>google.registry.module.tools.ToolsServlet</servlet-class>
-    <load-on-startup>1</load-on-startup>
-  </servlet>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/admin/updateUserGroup</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/admin/verifyOte</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/admin/createGroups</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/admin/createPremiumList</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/admin/list/*</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/admin/deleteEntity</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/admin/updatePremiumList</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/loadtest</url-pattern>
-  </servlet-mapping>
-
-  <!--  ExecuteEppCommand uses this to execute remotely. -->
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/epptool</url-pattern>
-  </servlet-mapping>
-
-  <!-- Refreshes all active domains in DNS -->
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/task/refreshDnsForAllDomains</url-pattern>
-  </servlet-mapping>
-
-  <servlet-mapping>
-    <servlet-name>tools-servlet</servlet-name>
-    <url-pattern>/_dr/task/generateZoneFiles</url-pattern>
-  </servlet-mapping>
-
-  <!-- Security config -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Internal</web-resource-name>
-      <description>
-        Admin-only internal section.  Requests for paths covered by the URL patterns below will be
-        checked for a logged-in user account that's allowed to access the AppEngine admin console
-        (NOTE: this includes Editor/Viewer permissions in addition to Owner and the new IAM
-        App Engine Admin role.  See https://cloud.google.com/appengine/docs/java/access-control
-        specifically the "Access handlers that have a login:admin restriction" line.)
-
-        TODO(b/28219927): lift some of these restrictions so that we can allow OAuth authentication
-        for endpoints that need to be accessed by open-source automated processes.
-     </description>
-
-      <!-- Internal AppEngine endpoints.  The '_ah' is short for app hosting.  -->
-      <url-pattern>/_ah/*</url-pattern>
-
-      <!-- Registrar console (should not be available on non-default module). -->
-      <url-pattern>/registrar*</url-pattern>
-
-      <!-- Verbatim JavaScript sources (only visible to admins for debugging). -->
-      <url-pattern>/assets/sources/*</url-pattern>
-
-    </web-resource-collection>
-    <auth-constraint>
-      <role-name>admin</role-name>
-    </auth-constraint>
-
-    <!-- Repeated here since catch-all rule below is not inherited. -->
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-
-  <!-- Require TLS on all requests. -->
-  <security-constraint>
-    <web-resource-collection>
-      <web-resource-name>Secure</web-resource-name>
-      <description>
-        Require encryption for all paths. http URLs will be redirected to https.
-      </description>
-      <url-pattern>/*</url-pattern>
-    </web-resource-collection>
-    <user-data-constraint>
-      <transport-guarantee>CONFIDENTIAL</transport-guarantee>
-    </user-data-constraint>
-  </security-constraint>
-</web-app>

core/src/main/java/google/registry/env/crash/backend/WEB-INF/appengine-web.xml

@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>backend</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="crash"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/crash/bsa/WEB-INF/appengine-web.xml

@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>bsa</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="crash"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <!-- Enable external traffic to go through VPC, required for static ip -->
-  <vpc-access-connector>
-    <name>projects/domain-registry-crash/locations/us-central1/connectors/appengine-connector</name>
-    <egress-setting>all-traffic</egress-setting>
-  </vpc-access-connector>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/crash/default/WEB-INF/appengine-web.xml

@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>default</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>30m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="crash"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-    <include path="/registrar/*.html" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/crash/pubapi/WEB-INF/appengine-web.xml

@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>pubapi</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>8</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="crash"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-    <include path="/assets/js/**" expiration="1m"/>
-    <include path="/assets/css/**" expiration="1m"/>
-    <include path="/assets/images/**" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/crash/tools/WEB-INF/appengine-web.xml

@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>tools</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="crash"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1m"/>
-    <include path="/assets/js/**" expiration="1m"/>
-    <include path="/assets/css/**" expiration="1m"/>
-    <include path="/assets/images/**" expiration="1m"/>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/local/backend/WEB-INF/appengine-web.xml

@@ -1,32 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>backend</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="local"/>
-    <property name="appengine.generated.dir"
-              value="/tmp/domain-registry-appengine-generated/local/"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/local/bsa/WEB-INF/appengine-web.xml

@@ -1,32 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>bsa</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="local"/>
-    <property name="appengine.generated.dir"
-              value="/tmp/domain-registry-appengine-generated/local/"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/local/default/WEB-INF/appengine-web.xml

@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>default</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="local"/>
-    <property name="appengine.generated.dir"
-              value="/tmp/domain-registry-appengine-generated/local/"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-    <include path="/registrar/*.html">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/local/pubapi/WEB-INF/appengine-web.xml

@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>pubapi</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>8</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="local"/>
-    <property name="appengine.generated.dir"
-              value="/tmp/domain-registry-appengine-generated/local/"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-    <include path="/assets/js/**">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-    <include path="/assets/css/**">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-    <include path="/assets/images/**">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/local/tools/WEB-INF/appengine-web.xml

@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>tools</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="local"/>
-    <property name="appengine.generated.dir"
-              value="/tmp/domain-registry-appengine-generated/local/"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-    <include path="/assets/js/**">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-    <include path="/assets/css/**">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-    <include path="/assets/images/**">
-      <http-header name="Cache-Control" value="max-age=0,must-revalidate" />
-    </include>
-  </static-files>
-</appengine-web-app>

core/src/main/java/google/registry/env/production/backend/WEB-INF/appengine-web.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>backend</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <basic-scaling>
-    <max-instances>100</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="production"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/production/bsa/WEB-INF/appengine-web.xml

@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>bsa</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <basic-scaling>
-    <max-instances>3</max-instances>
-    <idle-timeout>60m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="production"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <!-- Enable external traffic to go through VPC, required for static ip -->
-  <vpc-access-connector>
-    <name>projects/domain-registry/locations/us-central1/connectors/appengine-connector</name>
-    <egress-setting>all-traffic</egress-setting>
-  </vpc-access-connector>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/production/default/WEB-INF/appengine-web.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>default</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <manual-scaling>
-    <instances>24</instances>
-  </manual-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="production"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-    <include path="/registrar/*.html" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/production/pubapi/WEB-INF/appengine-web.xml

@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>pubapi</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <manual-scaling>
-    <instances>24</instances>
-  </manual-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="production"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-    <include path="/assets/js/**" expiration="1d"/>
-    <include path="/assets/css/**" expiration="1d"/>
-    <include path="/assets/images/**" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/production/tools/WEB-INF/appengine-web.xml

@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>tools</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <basic-scaling>
-    <max-instances>5</max-instances>
-    <idle-timeout>60m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="production"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-    <include path="/assets/js/**" expiration="1d"/>
-    <include path="/assets/css/**" expiration="1d"/>
-    <include path="/assets/images/**" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/qa/backend/WEB-INF/appengine-web.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>backend</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="qa"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1h"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/qa/bsa/WEB-INF/appengine-web.xml

@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>bsa</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="qa"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1h"/>
-  </static-files>
-
-    <!-- Enable external traffic to go through VPC, required for static ip -->
-  <vpc-access-connector>
-    <name>projects/domain-registry-qa/locations/us-central1/connectors/appengine-connector</name>
-    <egress-setting>all-traffic</egress-setting>
-  </vpc-access-connector>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/qa/default/WEB-INF/appengine-web.xml

@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>default</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>F4_1G</instance-class>
-  <automatic-scaling>
-    <min-idle-instances>1</min-idle-instances>
-    <max-idle-instances>automatic</max-idle-instances>
-    <min-pending-latency>automatic</min-pending-latency>
-    <max-pending-latency>100ms</max-pending-latency>
-    <max-concurrent-requests>10</max-concurrent-requests>
-  </automatic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="qa"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1h"/>
-    <include path="/registrar/*.html" expiration="1h"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/qa/pubapi/WEB-INF/appengine-web.xml

@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>pubapi</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="qa"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1h"/>
-    <include path="/assets/js/**" expiration="1h"/>
-    <include path="/assets/css/**" expiration="1h"/>
-    <include path="/assets/images/**" expiration="1h"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/qa/tools/WEB-INF/appengine-web.xml

@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>tools</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>10</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="qa"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1h"/>
-    <include path="/assets/js/**" expiration="1h"/>
-    <include path="/assets/css/**" expiration="1h"/>
-    <include path="/assets/images/**" expiration="1h"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/sandbox/backend/WEB-INF/appengine-web.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>backend</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>100</max-instances>
-    <idle-timeout>10m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="sandbox"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/sandbox/bsa/WEB-INF/appengine-web.xml

@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>bsa</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>3</max-instances>
-    <idle-timeout>60m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="sandbox"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-  </static-files>
-
-  <!-- Enable external traffic to go through VPC, required for static ip -->
-  <vpc-access-connector>
-    <name>projects/domain-registry-sandbox/locations/us-central1/connectors/appengine-connector</name>
-    <egress-setting>all-traffic</egress-setting>
-  </vpc-access-connector>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/sandbox/default/WEB-INF/appengine-web.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>default</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <manual-scaling>
-    <instances>6</instances>
-  </manual-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="sandbox"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-    <include path="/registrar/*.html" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/sandbox/pubapi/WEB-INF/appengine-web.xml

@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>pubapi</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4_1G</instance-class>
-  <manual-scaling>
-    <instances>5</instances>
-  </manual-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="sandbox"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-    <include path="/assets/js/**" expiration="1d"/>
-    <include path="/assets/css/**" expiration="1d"/>
-    <include path="/assets/images/**" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/env/sandbox/tools/WEB-INF/appengine-web.xml

@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
-
-  <runtime>java21</runtime>
-  <service>tools</service>
-  <app-engine-apis>true</app-engine-apis>
-  <sessions-enabled>true</sessions-enabled>
-  <instance-class>B4</instance-class>
-  <basic-scaling>
-    <max-instances>5</max-instances>
-    <idle-timeout>60m</idle-timeout>
-  </basic-scaling>
-
-  <system-properties>
-    <property name="java.util.logging.config.file"
-              value="WEB-INF/logging.properties"/>
-    <property name="google.registry.environment"
-              value="sandbox"/>
-  </system-properties>
-
-  <env-variables>
-    <env-var name="GOOGLE_APPLICATION_CREDENTIALS_SKIP_APP_ENGINE" value="true"/>
-  </env-variables>
-
-  <static-files>
-    <include path="/*.html" expiration="1d"/>
-    <include path="/assets/js/**" expiration="1d"/>
-    <include path="/assets/css/**" expiration="1d"/>
-    <include path="/assets/images/**" expiration="1d"/>
-  </static-files>
-
-  <!-- Prevent uncaught servlet errors from leaking a stack trace. -->
-  <static-error-handlers>
-    <handler file="error.html"/>
-  </static-error-handlers>
-</appengine-web-app>

core/src/main/java/google/registry/export/sheet/SyncRegistrarsSheet.java

@@ -128,10 +128,10 @@ class SyncRegistrarsSheet {
                   builder.put("billingContacts", convertContacts(contacts, byType(BILLING)));
                   builder.put(
                       "contactsMarkedAsWhoisAdmin",
-                      convertContacts(contacts, RegistrarPoc::getVisibleInWhoisAsAdmin));
+                      convertContacts(contacts, RegistrarPoc::getVisibleInRdapAsAdmin));
                   builder.put(
                       "contactsMarkedAsWhoisTech",
-                      convertContacts(contacts, RegistrarPoc::getVisibleInWhoisAsTech));
+                      convertContacts(contacts, RegistrarPoc::getVisibleInRdapAsTech));
                   builder.put("emailAddress", convert(registrar.getEmailAddress()));
                   builder.put("address.street", convert(address.getStreet()));
                   builder.put("address.city", convert(address.getCity()));

core/src/main/java/google/registry/flows/CheckApiAction.java

@@ -38,7 +38,6 @@ import static google.registry.pricing.PricingEngineProxy.isDomainPremium;
 import static google.registry.util.DomainNameUtils.canonicalizeHostname;
 import static org.json.simple.JSONValue.toJSONString;
 
-import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.flogger.FluentLogger;
@@ -185,8 +184,7 @@ public class CheckApiAction implements Runnable {
   }
 
   private boolean checkExists(String domainString, DateTime now) {
-    return !ForeignKeyUtils.loadByCache(Domain.class, ImmutableList.of(domainString), now)
-        .isEmpty();
+    return ForeignKeyUtils.loadKeyByCache(Domain.class, domainString, now).isPresent();
   }
 
   private Optional<String> checkReserved(InternetDomainName domainName) {

core/src/main/java/google/registry/flows/FlowUtils.java

@@ -56,9 +56,10 @@ public final class FlowUtils {
     }
   }
 
-  /** Persists the saves and deletes in an {@link EntityChanges} to the DB. */
+  /** Persists the inserts, updates, and deletes in an {@link EntityChanges} to the DB. */
   public static void persistEntityChanges(EntityChanges entityChanges) {
-    tm().putAll(entityChanges.getSaves());
+    tm().insertAll(entityChanges.getInserts());
+    tm().updateAll(entityChanges.getUpdates());
     tm().delete(entityChanges.getDeletes());
   }
 

core/src/main/java/google/registry/flows/ResourceFlowUtils.java

@@ -16,7 +16,6 @@ package google.registry.flows;
 
 import static com.google.common.collect.Sets.intersection;
 import static google.registry.model.EppResourceUtils.isLinked;
-import static google.registry.model.EppResourceUtils.loadByForeignKey;
 import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
 
 import com.google.common.collect.ImmutableSet;
@@ -72,10 +71,9 @@ public final class ResourceFlowUtils {
    */
   public static <R extends EppResource> void checkLinkedDomains(
       final String targetId, final DateTime now, final Class<R> resourceClass) throws EppException {
-    VKey<R> key = ForeignKeyUtils.load(resourceClass, targetId, now);
-    if (key == null) {
-      throw new ResourceDoesNotExistException(resourceClass, targetId);
-    }
+    VKey<R> key =
+        ForeignKeyUtils.loadKey(resourceClass, targetId, now)
+            .orElseThrow(() -> new ResourceDoesNotExistException(resourceClass, targetId));
     if (isLinked(key, now)) {
       throw new ResourceToDeleteIsReferencedException();
     }
@@ -97,7 +95,7 @@ public final class ResourceFlowUtils {
 
   public static <R extends EppResource & ForeignKeyedEppResource> R loadAndVerifyExistence(
       Class<R> clazz, String targetId, DateTime now) throws ResourceDoesNotExistException {
-    return verifyExistence(clazz, targetId, loadByForeignKey(clazz, targetId, now));
+    return verifyExistence(clazz, targetId, ForeignKeyUtils.loadResource(clazz, targetId, now));
   }
 
   public static <R extends EppResource> R verifyExistence(
@@ -107,11 +105,10 @@ public final class ResourceFlowUtils {
 
   public static <R extends EppResource> void verifyResourceDoesNotExist(
       Class<R> clazz, String targetId, DateTime now, String registrarId) throws EppException {
-    VKey<R> key = ForeignKeyUtils.load(clazz, targetId, now);
-    if (key != null) {
-      R resource = tm().loadByKey(key);
+    Optional<R> resource = ForeignKeyUtils.loadResource(clazz, targetId, now);
+    if (resource.isPresent()) {
       // These are similar exceptions, but we can track them internally as log-based metrics.
-      if (Objects.equals(registrarId, resource.getPersistedCurrentSponsorRegistrarId())) {
+      if (Objects.equals(registrarId, resource.get().getPersistedCurrentSponsorRegistrarId())) {
         throw new ResourceAlreadyExistsForThisClientException(targetId);
       } else {
         throw new ResourceCreateContentionException(targetId);

core/src/main/java/google/registry/flows/contact/ContactCheckFlow.java

@@ -16,7 +16,6 @@ package google.registry.flows.contact;
 
 import static google.registry.flows.FlowUtils.validateRegistrarIsLoggedIn;
 import static google.registry.flows.ResourceFlowUtils.verifyTargetIdCount;
-import static google.registry.model.EppResourceUtils.checkResourcesExist;
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
@@ -26,6 +25,7 @@ import google.registry.flows.ExtensionManager;
 import google.registry.flows.FlowModule.RegistrarId;
 import google.registry.flows.TransactionalFlow;
 import google.registry.flows.annotations.ReportingSpec;
+import google.registry.model.ForeignKeyUtils;
 import google.registry.model.contact.Contact;
 import google.registry.model.contact.ContactCommand.Check;
 import google.registry.model.eppinput.ResourceCommand;
@@ -62,7 +62,7 @@ public final class ContactCheckFlow implements TransactionalFlow {
     ImmutableList<String> targetIds = ((Check) resourceCommand).getTargetIds();
     verifyTargetIdCount(targetIds, maxChecks);
     ImmutableSet<String> existingIds =
-        checkResourcesExist(Contact.class, targetIds, clock.nowUtc());
+        ForeignKeyUtils.loadKeys(Contact.class, targetIds, clock.nowUtc()).keySet();
     ImmutableList.Builder<ContactCheck> checks = new ImmutableList.Builder<>();
     for (String id : targetIds) {
       boolean unused = !existingIds.contains(id);

core/src/main/java/google/registry/flows/custom/EntityChanges.java

@@ -19,25 +19,30 @@ import com.google.common.collect.ImmutableSet;
 import google.registry.model.ImmutableObject;
 import google.registry.persistence.VKey;
 
-/** A record that encapsulates database entities to both save and delete. */
+/** A record that encapsulates database entities to insert, update, and delete. */
 public record EntityChanges(
-    ImmutableSet<ImmutableObject> saves, ImmutableSet<VKey<ImmutableObject>> deletes) {
+    ImmutableSet<ImmutableObject> inserts,
+    ImmutableSet<ImmutableObject> updates,
+    ImmutableSet<VKey<ImmutableObject>> deletes) {
 
-  public ImmutableSet<ImmutableObject> getSaves() {
-    return saves;
+  public ImmutableSet<ImmutableObject> getInserts() {
+    return inserts;
+  }
+
+  public ImmutableSet<ImmutableObject> getUpdates() {
+    return updates;
   }
-  ;
 
   public ImmutableSet<VKey<ImmutableObject>> getDeletes() {
     return deletes;
   }
-  ;
 
   public static Builder newBuilder() {
-    // Default both entities to save and entities to delete to empty sets, so that the build()
-    // method won't subsequently throw an exception if one doesn't end up being applicable.
+    // Default inserts, updates, and deletes to empty sets, so that the build() method won't
+    // subsequently throw an exception if one doesn't end up being applicable.
     return new AutoBuilder_EntityChanges_Builder()
-        .setSaves(ImmutableSet.of())
+        .setInserts(ImmutableSet.of())
+        .setUpdates(ImmutableSet.of())
         .setDeletes(ImmutableSet.of());
   }
 
@@ -45,12 +50,21 @@ public record EntityChanges(
   @AutoBuilder
   public interface Builder {
 
-    Builder setSaves(ImmutableSet<ImmutableObject> entitiesToSave);
+    Builder setInserts(ImmutableSet<ImmutableObject> entitiesToInsert);
 
-    ImmutableSet.Builder<ImmutableObject> savesBuilder();
+    ImmutableSet.Builder<ImmutableObject> insertsBuilder();
 
-    default Builder addSave(ImmutableObject entityToSave) {
-      savesBuilder().add(entityToSave);
+    default Builder addInsert(ImmutableObject entityToInsert) {
+      insertsBuilder().add(entityToInsert);
+      return this;
+    }
+
+    Builder setUpdates(ImmutableSet<ImmutableObject> entitiesToUpdate);
+
+    ImmutableSet.Builder<ImmutableObject> updatesBuilder();
+
+    default Builder addUpdate(ImmutableObject entityToUpdate) {
+      updatesBuilder().add(entityToUpdate);
       return this;
     }
 

core/src/main/java/google/registry/flows/domain/DomainCheckFlow.java

@@ -181,7 +181,7 @@ public final class DomainCheckFlow implements TransactionalFlow {
             .setAsOfDate(now)
             .build());
     ImmutableMap<String, VKey<Domain>> existingDomains =
-        ForeignKeyUtils.load(Domain.class, domainNames, now);
+        ForeignKeyUtils.loadKeys(Domain.class, domainNames, now);
     // Check block labels only when there are unregistered domains, since "In use" goes before
     // "Blocked by BSA".
     ImmutableSet<InternetDomainName> bsaBlockedDomainNames =

core/src/main/java/google/registry/flows/domain/DomainCreateFlow.java

@@ -18,7 +18,6 @@ import static com.google.common.collect.ImmutableSet.toImmutableSet;
 import static google.registry.dns.DnsUtils.requestDomainDnsRefresh;
 import static google.registry.flows.FlowUtils.persistEntityChanges;
 import static google.registry.flows.FlowUtils.validateRegistrarIsLoggedIn;
-import static google.registry.flows.ResourceFlowUtils.verifyResourceDoesNotExist;
 import static google.registry.flows.domain.DomainFlowUtils.COLLISION_MESSAGE;
 import static google.registry.flows.domain.DomainFlowUtils.checkAllowedAccessToTld;
 import static google.registry.flows.domain.DomainFlowUtils.checkHasBillingAccount;
@@ -196,7 +195,6 @@ import org.joda.time.Duration;
  * @error {@link DomainFlowUtils.NameserversNotAllowedForTldException}
  * @error {@link DomainFlowUtils.NameserversNotSpecifiedForTldWithNameserverAllowListException}
  * @error {@link DomainFlowUtils.PremiumNameBlockedException}
- * @error {@link DomainFlowUtils.RegistrantNotAllowedException}
  * @error {@link RegistrantProhibitedException}
  * @error {@link DomainFlowUtils.RegistrarMustBeActiveForThisOperationException}
  * @error {@link DomainFlowUtils.TldDoesNotExistException}
@@ -224,6 +222,7 @@ public final class DomainCreateFlow implements MutatingFlow {
   @Inject DomainCreateFlowCustomLogic flowCustomLogic;
   @Inject DomainFlowTmchUtils tmchUtils;
   @Inject DomainPricingLogic pricingLogic;
+  @Inject DomainDeletionTimeCache domainDeletionTimeCache;
 
   @Inject DomainCreateFlow() {}
 
@@ -239,13 +238,13 @@ public final class DomainCreateFlow implements MutatingFlow {
     validateRegistrarIsLoggedIn(registrarId);
     verifyRegistrarIsActive(registrarId);
     extensionManager.validate();
+    verifyDomainDoesNotExist();
     DateTime now = tm().getTransactionTime();
     DomainCommand.Create command = cloneAndLinkReferences((Create) resourceCommand, now);
     Period period = command.getPeriod();
     verifyUnitIsYears(period);
     int years = period.getValue();
     validateRegistrationPeriod(years);
-    verifyResourceDoesNotExist(Domain.class, targetId, now, registrarId);
     // Validate that this is actually a legal domain name on a TLD that the registrar has access to.
     InternetDomainName domainName = validateDomainName(command.getDomainName());
     String domainLabel = domainName.parts().getFirst();
@@ -357,11 +356,11 @@ public final class DomainCreateFlow implements MutatingFlow {
             domainHistoryId, registrationExpirationTime, isAnchorTenant, allocationToken);
     PollMessage.Autorenew autorenewPollMessage =
         createAutorenewPollMessage(domainHistoryId, registrationExpirationTime);
-    ImmutableSet.Builder<ImmutableObject> entitiesToSave = new ImmutableSet.Builder<>();
-    entitiesToSave.add(createBillingEvent, autorenewBillingEvent, autorenewPollMessage);
+    ImmutableSet.Builder<ImmutableObject> entitiesToInsert = new ImmutableSet.Builder<>();
+    entitiesToInsert.add(createBillingEvent, autorenewBillingEvent, autorenewPollMessage);
     // Bill for EAP cost, if any.
     if (!feesAndCredits.getEapCost().isZero()) {
-      entitiesToSave.add(createEapBillingEvent(feesAndCredits, createBillingEvent));
+      entitiesToInsert.add(createEapBillingEvent(feesAndCredits, createBillingEvent));
     }
 
     ImmutableSet<ReservationType> reservationTypes = getReservationTypes(domainName);
@@ -404,12 +403,13 @@ public final class DomainCreateFlow implements MutatingFlow {
     DomainHistory domainHistory =
         buildDomainHistory(domain, tld, now, period, tld.getAddGracePeriodLength());
     if (reservationTypes.contains(NAME_COLLISION)) {
-      entitiesToSave.add(
+      entitiesToInsert.add(
           createNameCollisionOneTimePollMessage(targetId, domainHistory, registrarId, now));
     }
-    entitiesToSave.add(domain, domainHistory);
+    entitiesToInsert.add(domain, domainHistory);
+    ImmutableSet.Builder<ImmutableObject> entitiesToUpdate = new ImmutableSet.Builder<>();
     if (allocationToken.isPresent() && allocationToken.get().getTokenType().isOneTimeUse()) {
-      entitiesToSave.add(
+      entitiesToUpdate.add(
           AllocationTokenFlowUtils.redeemToken(
               allocationToken.get(), domainHistory.getHistoryEntryId()));
     }
@@ -422,7 +422,10 @@ public final class DomainCreateFlow implements MutatingFlow {
                 .setNewDomain(domain)
                 .setHistoryEntry(domainHistory)
                 .setEntityChanges(
-                    EntityChanges.newBuilder().setSaves(entitiesToSave.build()).build())
+                    EntityChanges.newBuilder()
+                        .setInserts(entitiesToInsert.build())
+                        .setUpdates(entitiesToUpdate.build())
+                        .build())
                 .setYears(years)
                 .build());
     persistEntityChanges(entityChanges);
@@ -649,6 +652,15 @@ public final class DomainCreateFlow implements MutatingFlow {
         .build();
   }
 
+  private void verifyDomainDoesNotExist() throws ResourceCreateContentionException {
+    Optional<DateTime> previousDeletionTime =
+        domainDeletionTimeCache.getDeletionTimeForDomain(targetId);
+    if (previousDeletionTime.isPresent()
+        && !tm().getTransactionTime().isAfter(previousDeletionTime.get())) {
+      throw new ResourceCreateContentionException(targetId);
+    }
+  }
+
   private static BillingEvent createEapBillingEvent(
       FeesAndCredits feesAndCredits, BillingEvent createBillingEvent) {
     return new BillingEvent.Builder()

core/src/main/java/google/registry/flows/domain/DomainDeleteFlow.java

@@ -77,6 +77,7 @@ import google.registry.model.domain.fee.FeeTransformResponseExtension;
 import google.registry.model.domain.fee06.FeeDeleteResponseExtensionV06;
 import google.registry.model.domain.fee11.FeeDeleteResponseExtensionV11;
 import google.registry.model.domain.fee12.FeeDeleteResponseExtensionV12;
+import google.registry.model.domain.feestdv1.FeeDeleteResponseExtensionStdV1;
 import google.registry.model.domain.metadata.MetadataExtension;
 import google.registry.model.domain.rgp.GracePeriodStatus;
 import google.registry.model.domain.secdns.SecDnsCreateExtension;
@@ -151,7 +152,7 @@ public final class DomainDeleteFlow implements MutatingFlow, SqlStatementLogging
     verifyDeleteAllowed(existingDomain, tld, now);
     flowCustomLogic.afterValidation(
         AfterValidationParameters.newBuilder().setExistingDomain(existingDomain).build());
-    ImmutableSet.Builder<ImmutableObject> entitiesToSave = new ImmutableSet.Builder<>();
+    ImmutableSet.Builder<ImmutableObject> entitiesToInsert = new ImmutableSet.Builder<>();
     Domain.Builder builder;
     if (existingDomain.getStatusValues().contains(StatusValue.PENDING_TRANSFER)) {
       builder =
@@ -221,7 +222,7 @@ public final class DomainDeleteFlow implements MutatingFlow, SqlStatementLogging
       } else {
         PollMessage.OneTime deletePollMessage =
             createDeletePollMessage(existingDomain, domainHistoryId, deletionTime);
-        entitiesToSave.add(deletePollMessage);
+        entitiesToInsert.add(deletePollMessage);
         builder.setDeletePollMessage(deletePollMessage.createVKey());
       }
     }
@@ -230,7 +231,7 @@ public final class DomainDeleteFlow implements MutatingFlow, SqlStatementLogging
     // registrar other than the sponsoring registrar (which will necessarily be a superuser).
     if (durationUntilDelete.isLongerThan(Duration.ZERO)
         && !registrarId.equals(existingDomain.getPersistedCurrentSponsorRegistrarId())) {
-      entitiesToSave.add(
+      entitiesToInsert.add(
           createImmediateDeletePollMessage(existingDomain, domainHistoryId, now, deletionTime));
     }
 
@@ -239,7 +240,7 @@ public final class DomainDeleteFlow implements MutatingFlow, SqlStatementLogging
     for (GracePeriod gracePeriod : existingDomain.getGracePeriods()) {
       // No cancellation is written if the grace period was not for a billable event.
       if (gracePeriod.hasBillingEvent()) {
-        entitiesToSave.add(
+        entitiesToInsert.add(
             BillingCancellation.forGracePeriod(gracePeriod, now, domainHistoryId, targetId));
         if (gracePeriod.getBillingEvent() != null) {
           // Take the amount of registration time being refunded off the expiration time.
@@ -271,7 +272,7 @@ public final class DomainDeleteFlow implements MutatingFlow, SqlStatementLogging
     // ResourceDeleteFlow since it's listed in serverApproveEntities.
     requestDomainDnsRefresh(existingDomain.getDomainName());
 
-    entitiesToSave.add(newDomain, domainHistory);
+    entitiesToInsert.add(domainHistory);
     EntityChanges entityChanges =
         flowCustomLogic.beforeSave(
             BeforeSaveParameters.newBuilder()
@@ -279,7 +280,10 @@ public final class DomainDeleteFlow implements MutatingFlow, SqlStatementLogging
                 .setNewDomain(newDomain)
                 .setHistoryEntry(domainHistory)
                 .setEntityChanges(
-                    EntityChanges.newBuilder().setSaves(entitiesToSave.build()).build())
+                    EntityChanges.newBuilder()
+                        .setInserts(entitiesToInsert.build())
+                        .addUpdate(newDomain)
+                        .build())
                 .build());
     BeforeResponseReturnData responseData =
         flowCustomLogic.beforeResponse(
@@ -425,6 +429,9 @@ public final class DomainDeleteFlow implements MutatingFlow, SqlStatementLogging
   @Nullable
   private FeeTransformResponseExtension.Builder getDeleteResponseBuilder() {
     Set<String> uris = nullToEmpty(sessionMetadata.getServiceExtensionUris());
+    if (uris.contains(ServiceExtension.FEE_1_00.getUri())) {
+      return new FeeDeleteResponseExtensionStdV1.Builder();
+    }
     if (uris.contains(ServiceExtension.FEE_0_12.getUri())) {
       return new FeeDeleteResponseExtensionV12.Builder();
     }

core/src/main/java/google/registry/flows/domain/DomainDeletionTimeCache.java

@@ -0,0 +1,133 @@
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.flows.domain;
+
+import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
+
+import com.github.benmanes.caffeine.cache.CacheLoader;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import com.github.benmanes.caffeine.cache.Expiry;
+import com.github.benmanes.caffeine.cache.LoadingCache;
+import com.github.benmanes.caffeine.cache.Ticker;
+import com.google.common.collect.ImmutableSet;
+import google.registry.model.ForeignKeyUtils;
+import google.registry.model.domain.Domain;
+import google.registry.util.DateTimeUtils;
+import java.util.Optional;
+import org.joda.time.DateTime;
+
+/**
+ * Functionally-static loading cache that keeps track of deletion (AKA drop) times for domains.
+ *
+ * <p>Some domain names may have many create requests issued shortly before (and directly after) the
+ * name is released due to a previous registrant deleting it. In those cases, caching the deletion
+ * time of the existing domain allows us to short-circuit the request and avoid any load on the
+ * database checking the existing domain (at least, in cases where the request hits a particular
+ * node more than once).
+ *
+ * <p>The cache is fairly short-lived (as we're concerned about many requests at basically the same
+ * time), and entries also expire when the drop actually happens. If the domain is re-created after
+ * a drop, the next load attempt will populate the cache with a deletion time of END_OF_TIME, which
+ * will be read from the cache by subsequent attempts.
+ *
+ * <p>We take advantage of the fact that Caffeine caches don't store nulls returned from the
+ * CacheLoader, so a null result (meaning the domain doesn't exist) won't affect future calls (this
+ * avoids a stale-cache situation where the cache "thinks" the domain doesn't exist, but it does).
+ * Put another way, if a domain really doesn't exist, we'll re-attempt the database load every time.
+ *
+ * <p>We don't explicitly set the cache inside domain create/delete flows, in case the transaction
+ * fails at commit time. It's better to have stale data, or to require an additional database load,
+ * than to have incorrect data.
+ *
+ * <p>Note: this should be injected as a singleton -- it's essentially static, but we have it as a
+ * non-static object for concurrent testing purposes.
+ */
+public class DomainDeletionTimeCache {
+
+  // Max expiry time is ten minutes
+  private static final long NANOS_IN_ONE_MILLISECOND = 100000L;
+  private static final long MAX_EXPIRY_NANOS = 10L * 60L * 1000L * NANOS_IN_ONE_MILLISECOND;
+  private static final int MAX_ENTRIES = 500;
+
+  /**
+   * Expire after the max duration, or after the domain is set to drop (whichever comes first).
+   *
+   * <p>If the domain has already been deleted (the deletion time is <= now), the entry will
+   * immediately be expired/removed.
+   *
+   * <p>NB: the Expiry class requires the return value in <b>nanoseconds</b>, not milliseconds
+   */
+  private static final Expiry<String, DateTime> EXPIRY_POLICY =
+      new Expiry<>() {
+        @Override
+        public long expireAfterCreate(String key, DateTime value, long currentTime) {
+          // Watch out for Long overflow
+          long deletionTimeNanos =
+              value.equals(DateTimeUtils.END_OF_TIME)
+                  ? Long.MAX_VALUE
+                  : value.getMillis() * NANOS_IN_ONE_MILLISECOND;
+          long nanosUntilDeletion = deletionTimeNanos - currentTime;
+          return Math.max(0L, Math.min(MAX_EXPIRY_NANOS, nanosUntilDeletion));
+        }
+
+        /** Reset the time entirely on update, as if we were creating the entry anew. */
+        @Override
+        public long expireAfterUpdate(
+            String key, DateTime value, long currentTime, long currentDuration) {
+          return expireAfterCreate(key, value, currentTime);
+        }
+
+        /** Reads do not change the expiry duration. */
+        @Override
+        public long expireAfterRead(
+            String key, DateTime value, long currentTime, long currentDuration) {
+          return currentDuration;
+        }
+      };
+
+  /** Attempt to load the domain's deletion time if the domain exists. */
+  private static final CacheLoader<String, DateTime> CACHE_LOADER =
+      (domainName) -> {
+        ForeignKeyUtils.MostRecentResource mostRecentResource =
+            ForeignKeyUtils.loadMostRecentResources(
+                    Domain.class, ImmutableSet.of(domainName), false)
+                .get(domainName);
+        return mostRecentResource == null ? null : mostRecentResource.deletionTime();
+      };
+
+  // Unfortunately, maintenance tasks aren't necessarily already in a transaction
+  private static final Ticker TRANSACTION_TIME_TICKER =
+      () -> tm().reTransact(() -> tm().getTransactionTime().getMillis() * NANOS_IN_ONE_MILLISECOND);
+
+  public static DomainDeletionTimeCache create() {
+    return new DomainDeletionTimeCache(
+        Caffeine.newBuilder()
+            .ticker(TRANSACTION_TIME_TICKER)
+            .expireAfter(EXPIRY_POLICY)
+            .maximumSize(MAX_ENTRIES)
+            .build(CACHE_LOADER));
+  }
+
+  private final LoadingCache<String, DateTime> cache;
+
+  private DomainDeletionTimeCache(LoadingCache<String, DateTime> cache) {
+    this.cache = cache;
+  }
+
+  /** Returns the domain's deletion time, or null if it doesn't currently exist. */
+  public Optional<DateTime> getDeletionTimeForDomain(String domainName) {
+    return Optional.ofNullable(cache.get(domainName));
+  }
+}

core/src/main/java/google/registry/flows/domain/DomainDeletionTimeCacheModule.java

@@ -1,4 +1,4 @@
-// Copyright 2017 The Nomulus Authors. All Rights Reserved.
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,13 +12,19 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-/**
- * @fileoverview Test existing solely to run the :check BUILD rule.
- */
+package google.registry.flows.domain;
 
-goog.setTestOnly();
+import dagger.Module;
+import dagger.Provides;
+import jakarta.inject.Singleton;
 
-goog.require('goog.testing.jsunit');
+/** Dagger module to provide the {@link DomainDeletionTimeCache}. */
+@Module
+public class DomainDeletionTimeCacheModule {
 
-
-function testNothing() {}
+  @Provides
+  @Singleton
+  public static DomainDeletionTimeCache provideDomainDeletionTimeCache() {
+    return DomainDeletionTimeCache.create();
+  }
+}

core/src/main/java/google/registry/flows/domain/DomainFlowUtils.java

@@ -553,17 +553,6 @@ public class DomainFlowUtils {
     }
   }
 
-  static void validateRegistrantAllowedOnTld(String tld, Optional<String> registrantContactId)
-      throws RegistrantNotAllowedException {
-    ImmutableSet<String> allowedRegistrants = Tld.get(tld).getAllowedRegistrantContactIds();
-    // Empty allow list or null registrantContactId are ignored.
-    if (registrantContactId.isPresent()
-        && !allowedRegistrants.isEmpty()
-        && !allowedRegistrants.contains(registrantContactId.get())) {
-      throw new RegistrantNotAllowedException(registrantContactId.get());
-    }
-  }
-
   static void validateNameserversAllowedOnTld(String tld, Set<String> fullyQualifiedHostNames)
       throws EppException {
     ImmutableSet<String> allowedHostNames = Tld.get(tld).getAllowedFullyQualifiedHostNames();
@@ -711,7 +700,7 @@ public class DomainFlowUtils {
 
     BillingRecurrence newBillingRecurrence =
         existingBillingRecurrence.asBuilder().setRecurrenceEndTime(newEndTime).build();
-    tm().put(newBillingRecurrence);
+    tm().update(newBillingRecurrence);
     return newBillingRecurrence;
   }
 
@@ -1091,7 +1080,6 @@ public class DomainFlowUtils {
         command.getContacts(), command.getRegistrant(), command.getNameservers());
     validateContactsHaveTypes(command.getContacts());
     String tldStr = tld.getTldStr();
-    validateRegistrantAllowedOnTld(tldStr, command.getRegistrantContactId());
     validateNoDuplicateContacts(command.getContacts());
     validateCreateContactData(command.getRegistrant(), command.getContacts());
     ImmutableSet<String> hostNames = command.getNameserverHostNames();
@@ -1630,13 +1618,6 @@ public class DomainFlowUtils {
     }
   }
 
-  /** Registrant is not allow-listed for this TLD. */
-  public static class RegistrantNotAllowedException extends StatusProhibitsOperationException {
-    public RegistrantNotAllowedException(String contactId) {
-      super(String.format("Registrant with id %s is not allow-listed for this TLD", contactId));
-    }
-  }
-
   /** Nameservers are not allow-listed for this TLD. */
   public static class NameserversNotAllowedForTldException
       extends StatusProhibitsOperationException {

core/src/main/java/google/registry/flows/domain/DomainInfoFlow.java

@@ -15,12 +15,11 @@
 package google.registry.flows.domain;
 
 import static google.registry.flows.FlowUtils.validateRegistrarIsLoggedIn;
-import static google.registry.flows.ResourceFlowUtils.verifyExistence;
+import static google.registry.flows.ResourceFlowUtils.loadAndVerifyExistence;
 import static google.registry.flows.ResourceFlowUtils.verifyOptionalAuthInfo;
 import static google.registry.flows.domain.DomainFlowUtils.addSecDnsExtensionIfPresent;
 import static google.registry.flows.domain.DomainFlowUtils.handleFeeRequest;
 import static google.registry.flows.domain.DomainFlowUtils.loadForeignKeyedDesignatedContacts;
-import static google.registry.model.EppResourceUtils.loadByForeignKey;
 import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
 
 import com.google.common.collect.ImmutableList;
@@ -108,8 +107,7 @@ public final class DomainInfoFlow implements MutatingFlow {
     validateRegistrarIsLoggedIn(registrarId);
     extensionManager.validate();
     DateTime now = clock.nowUtc();
-    Domain domain =
-        verifyExistence(Domain.class, targetId, loadByForeignKey(Domain.class, targetId, now));
+    Domain domain = loadAndVerifyExistence(Domain.class, targetId, now);
     verifyOptionalAuthInfo(authInfo, domain);
     flowCustomLogic.afterValidation(
         AfterValidationParameters.newBuilder().setDomain(domain).build());

core/src/main/java/google/registry/flows/domain/DomainRenewFlow.java

@@ -245,11 +245,13 @@ public final class DomainRenewFlow implements MutatingFlow {
             .build();
     DomainHistory domainHistory =
         buildDomainHistory(newDomain, now, command.getPeriod(), tld.getRenewGracePeriodLength());
-    ImmutableSet.Builder<ImmutableObject> entitiesToSave = new ImmutableSet.Builder<>();
-    entitiesToSave.add(
-        newDomain, domainHistory, explicitRenewEvent, newAutorenewEvent, newAutorenewPollMessage);
+    ImmutableSet.Builder<ImmutableObject> entitiesToInsert = new ImmutableSet.Builder<>();
+    ImmutableSet.Builder<ImmutableObject> entitiesToUpdate = new ImmutableSet.Builder<>();
+    entitiesToInsert.add(
+        domainHistory, explicitRenewEvent, newAutorenewEvent, newAutorenewPollMessage);
+    entitiesToUpdate.add(newDomain);
     if (allocationToken.isPresent() && allocationToken.get().getTokenType().isOneTimeUse()) {
-      entitiesToSave.add(
+      entitiesToUpdate.add(
           AllocationTokenFlowUtils.redeemToken(
               allocationToken.get(), domainHistory.getHistoryEntryId()));
     }
@@ -262,7 +264,10 @@ public final class DomainRenewFlow implements MutatingFlow {
                 .setYears(years)
                 .setHistoryEntry(domainHistory)
                 .setEntityChanges(
-                    EntityChanges.newBuilder().setSaves(entitiesToSave.build()).build())
+                    EntityChanges.newBuilder()
+                        .setInserts(entitiesToInsert.build())
+                        .setUpdates(entitiesToUpdate.build())
+                        .build())
                 .build());
     BeforeResponseReturnData responseData =
         flowCustomLogic.beforeResponse(

core/src/main/java/google/registry/flows/domain/DomainRestoreRequestFlow.java

@@ -146,18 +146,18 @@ public final class DomainRestoreRequestFlow implements MutatingFlow {
     verifyRestoreAllowed(command, existingDomain, feeUpdate, feesAndCredits, now);
     HistoryEntryId domainHistoryId = createHistoryEntryId(existingDomain);
     historyBuilder.setRevisionId(domainHistoryId.getRevisionId());
-    ImmutableSet.Builder<ImmutableObject> entitiesToSave = new ImmutableSet.Builder<>();
+    ImmutableSet.Builder<ImmutableObject> entitiesToInsert = new ImmutableSet.Builder<>();
 
     DateTime newExpirationTime =
         existingDomain.getRegistrationExpirationTime().plusYears(isExpired ? 1 : 0);
     // Restore the expiration time on the deleted domain, except if that's already passed, then add
     // a year and bill for it immediately, with no grace period.
     if (isExpired) {
-      entitiesToSave.add(
+      entitiesToInsert.add(
           createRenewBillingEvent(domainHistoryId, feesAndCredits.getRenewCost(), now));
     }
     // Always bill for the restore itself.
-    entitiesToSave.add(
+    entitiesToInsert.add(
         createRestoreBillingEvent(domainHistoryId, feesAndCredits.getRestoreCost(), now));
 
     BillingRecurrence autorenewEvent =
@@ -166,12 +166,14 @@ public final class DomainRestoreRequestFlow implements MutatingFlow {
             .setRecurrenceEndTime(END_OF_TIME)
             .setDomainHistoryId(domainHistoryId)
             .build();
+    entitiesToInsert.add(autorenewEvent);
     PollMessage.Autorenew autorenewPollMessage =
         newAutorenewPollMessage(existingDomain)
             .setEventTime(newExpirationTime)
             .setAutorenewEndTime(END_OF_TIME)
             .setDomainHistoryId(domainHistoryId)
             .build();
+    entitiesToInsert.add(autorenewPollMessage);
     Domain newDomain =
         performRestore(
             existingDomain,
@@ -181,8 +183,9 @@ public final class DomainRestoreRequestFlow implements MutatingFlow {
             now,
             registrarId);
     DomainHistory domainHistory = buildDomainHistory(newDomain, now);
-    entitiesToSave.add(newDomain, domainHistory, autorenewEvent, autorenewPollMessage);
-    tm().putAll(entitiesToSave.build());
+    entitiesToInsert.add(domainHistory);
+    tm().update(newDomain);
+    tm().insertAll(entitiesToInsert.build());
     if (existingDomain.getDeletePollMessage() != null) {
       tm().delete(existingDomain.getDeletePollMessage());
     }

core/src/main/java/google/registry/flows/domain/DomainTransferApproveFlow.java

@@ -172,7 +172,7 @@ public final class DomainTransferApproveFlow implements MutatingFlow {
                     .setDomainHistoryId(domainHistoryId)
                     .build());
 
-    ImmutableList.Builder<ImmutableObject> entitiesToSave = new ImmutableList.Builder<>();
+    ImmutableList.Builder<ImmutableObject> entitiesToInsert = new ImmutableList.Builder<>();
     // If we are within an autorenew grace period, cancel the autorenew billing event and don't
     // increase the registration time, since the transfer subsumes the autorenew's extra year.
     GracePeriod autorenewGrace =
@@ -184,7 +184,7 @@ public final class DomainTransferApproveFlow implements MutatingFlow {
       // then the gaining registrar is not charged for the one-year renewal and the losing registrar
       // still needs to be charged for the auto-renew.
       if (billingEvent.isPresent()) {
-        entitiesToSave.add(
+        entitiesToInsert.add(
             BillingCancellation.forGracePeriod(autorenewGrace, now, domainHistoryId, targetId));
       }
     }
@@ -259,14 +259,11 @@ public final class DomainTransferApproveFlow implements MutatingFlow {
     PollMessage gainingClientPollMessage =
         createGainingTransferPollMessage(
             targetId, newDomain.getTransferData(), newExpirationTime, now, domainHistoryId);
-    billingEvent.ifPresent(entitiesToSave::add);
-    entitiesToSave.add(
-        autorenewEvent,
-        gainingClientPollMessage,
-        gainingClientAutorenewPollMessage,
-        newDomain,
-        domainHistory);
-    tm().putAll(entitiesToSave.build());
+    billingEvent.ifPresent(entitiesToInsert::add);
+    entitiesToInsert.add(
+        autorenewEvent, gainingClientPollMessage, gainingClientAutorenewPollMessage, domainHistory);
+    tm().update(newDomain);
+    tm().insertAll(entitiesToInsert.build());
     // Delete the billing event and poll messages that were written in case the transfer would have
     // been implicitly server approved.
     tm().delete(existingDomain.getTransferData().getServerApproveEntities());

core/src/main/java/google/registry/flows/domain/DomainTransferCancelFlow.java

@@ -110,8 +110,8 @@ public final class DomainTransferCancelFlow implements MutatingFlow {
     Domain newDomain =
         denyPendingTransfer(existingDomain, TransferStatus.CLIENT_CANCELLED, now, registrarId);
     DomainHistory domainHistory = buildDomainHistory(newDomain, tld, now);
-    tm().putAll(
-            newDomain,
+    tm().update(newDomain);
+    tm().insertAll(
             domainHistory,
             createLosingTransferPollMessage(
                 targetId, newDomain.getTransferData(), null, domainHistoryId));

core/src/main/java/google/registry/flows/domain/DomainTransferRejectFlow.java

@@ -109,8 +109,8 @@ public final class DomainTransferRejectFlow implements MutatingFlow {
     Domain newDomain =
         denyPendingTransfer(existingDomain, TransferStatus.CLIENT_REJECTED, now, registrarId);
     DomainHistory domainHistory = buildDomainHistory(newDomain, tld, now);
-    tm().putAll(
-            newDomain,
+    tm().update(newDomain);
+    tm().insertAll(
             domainHistory,
             createGainingTransferPollMessage(
                 targetId, newDomain.getTransferData(), null, now, domainHistoryId));

core/src/main/java/google/registry/flows/domain/DomainTransferRequestFlow.java

@@ -283,11 +283,9 @@ public final class DomainTransferRequestFlow implements MutatingFlow {
 
     asyncTaskEnqueuer.enqueueAsyncResave(
         newDomain.createVKey(), now, ImmutableSortedSet.of(automaticTransferTime));
-    tm().putAll(
-            new ImmutableSet.Builder<>()
-                .add(newDomain, domainHistory, requestPollMessage)
-                .addAll(serverApproveEntities)
-                .build());
+    tm().put(newDomain);
+    tm().putAll(serverApproveEntities);
+    tm().insertAll(domainHistory, requestPollMessage);
     return responseBuilder
         .setResultFromCode(SUCCESS_WITH_ACTION_PENDING)
         .setResData(createResponse(period, existingDomain, newDomain, now))

core/src/main/java/google/registry/flows/domain/DomainUpdateFlow.java

@@ -36,7 +36,6 @@ import static google.registry.flows.domain.DomainFlowUtils.validateFeesAckedIfPr
 import static google.registry.flows.domain.DomainFlowUtils.validateNameserversAllowedOnTld;
 import static google.registry.flows.domain.DomainFlowUtils.validateNameserversCountForTld;
 import static google.registry.flows.domain.DomainFlowUtils.validateNoDuplicateContacts;
-import static google.registry.flows.domain.DomainFlowUtils.validateRegistrantAllowedOnTld;
 import static google.registry.flows.domain.DomainFlowUtils.validateUpdateContactData;
 import static google.registry.flows.domain.DomainFlowUtils.verifyClientUpdateNotProhibited;
 import static google.registry.flows.domain.DomainFlowUtils.verifyNotInPendingDelete;
@@ -131,7 +130,6 @@ import org.joda.time.DateTime;
  * @error {@link DomainFlowUtils.NameserversNotAllowedForTldException}
  * @error {@link NameserversNotSpecifiedForTldWithNameserverAllowListException}
  * @error {@link DomainFlowUtils.NotAuthorizedForTldException}
- * @error {@link DomainFlowUtils.RegistrantNotAllowedException}
  * @error {@link RegistrantProhibitedException}
  * @error {@link DomainFlowUtils.SecDnsAllUsageException}
  * @error {@link DomainFlowUtils.TooManyDsRecordsException}
@@ -190,14 +188,16 @@ public final class DomainUpdateFlow implements MutatingFlow {
     if (requiresDnsUpdate(existingDomain, newDomain)) {
       requestDomainDnsRefresh(targetId);
     }
-    ImmutableSet.Builder<ImmutableObject> entitiesToSave = new ImmutableSet.Builder<>();
-    entitiesToSave.add(newDomain, domainHistory);
+    ImmutableSet.Builder<ImmutableObject> entitiesToInsert = new ImmutableSet.Builder<>();
+    ImmutableSet.Builder<ImmutableObject> entitiesToUpdate = new ImmutableSet.Builder<>();
+    entitiesToUpdate.add(newDomain);
+    entitiesToInsert.add(domainHistory);
     Optional<BillingEvent> statusUpdateBillingEvent =
         createBillingEventForStatusUpdates(existingDomain, newDomain, domainHistory, now);
-    statusUpdateBillingEvent.ifPresent(entitiesToSave::add);
+    statusUpdateBillingEvent.ifPresent(entitiesToInsert::add);
     Optional<PollMessage.OneTime> serverStatusUpdatePollMessage =
         createPollMessageForServerStatusUpdates(existingDomain, newDomain, domainHistory, now);
-    serverStatusUpdatePollMessage.ifPresent(entitiesToSave::add);
+    serverStatusUpdatePollMessage.ifPresent(entitiesToInsert::add);
     EntityChanges entityChanges =
         flowCustomLogic.beforeSave(
             BeforeSaveParameters.newBuilder()
@@ -205,7 +205,10 @@ public final class DomainUpdateFlow implements MutatingFlow {
                 .setNewDomain(newDomain)
                 .setExistingDomain(existingDomain)
                 .setEntityChanges(
-                    EntityChanges.newBuilder().setSaves(entitiesToSave.build()).build())
+                    EntityChanges.newBuilder()
+                        .setInserts(entitiesToInsert.build())
+                        .setUpdates(entitiesToUpdate.build())
+                        .build())
                 .build());
     persistEntityChanges(entityChanges);
     return responseBuilder.build();
@@ -243,7 +246,6 @@ public final class DomainUpdateFlow implements MutatingFlow {
         add.getNameservers());
     validateContactsHaveTypes(add.getContacts());
     validateContactsHaveTypes(remove.getContacts());
-    validateRegistrantAllowedOnTld(tldStr, command.getInnerChange().getRegistrantContactId());
     validateNameserversAllowedOnTld(tldStr, add.getNameserverHostNames());
   }
 

core/src/main/java/google/registry/flows/host/HostCheckFlow.java

@@ -16,7 +16,6 @@ package google.registry.flows.host;
 
 import static google.registry.flows.FlowUtils.validateRegistrarIsLoggedIn;
 import static google.registry.flows.ResourceFlowUtils.verifyTargetIdCount;
-import static google.registry.model.EppResourceUtils.checkResourcesExist;
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
@@ -26,6 +25,7 @@ import google.registry.flows.ExtensionManager;
 import google.registry.flows.FlowModule.RegistrarId;
 import google.registry.flows.TransactionalFlow;
 import google.registry.flows.annotations.ReportingSpec;
+import google.registry.model.ForeignKeyUtils;
 import google.registry.model.eppinput.ResourceCommand;
 import google.registry.model.eppoutput.CheckData.HostCheck;
 import google.registry.model.eppoutput.CheckData.HostCheckData;
@@ -61,7 +61,8 @@ public final class HostCheckFlow implements TransactionalFlow {
     extensionManager.validate(); // There are no legal extensions for this flow.
     ImmutableList<String> hostnames = ((Check) resourceCommand).getTargetIds();
     verifyTargetIdCount(hostnames, maxChecks);
-    ImmutableSet<String> existingIds = checkResourcesExist(Host.class, hostnames, clock.nowUtc());
+    ImmutableSet<String> existingIds =
+        ForeignKeyUtils.loadKeys(Host.class, hostnames, clock.nowUtc()).keySet();
     ImmutableList.Builder<HostCheck> checks = new ImmutableList.Builder<>();
     for (String hostname : hostnames) {
       boolean unused = !existingIds.contains(hostname);

core/src/main/java/google/registry/flows/host/HostCreateFlow.java

@@ -126,7 +126,8 @@ public final class HostCreateFlow implements MutatingFlow {
             .setSuperordinateDomain(superordinateDomain.map(Domain::createVKey).orElse(null))
             .build();
     historyBuilder.setType(HOST_CREATE).setHost(newHost);
-    ImmutableSet<ImmutableObject> entitiesToSave = ImmutableSet.of(newHost, historyBuilder.build());
+    ImmutableSet<ImmutableObject> entitiesToInsert =
+        ImmutableSet.of(newHost, historyBuilder.build());
     if (superordinateDomain.isPresent()) {
       tm().update(
               superordinateDomain
@@ -138,7 +139,7 @@ public final class HostCreateFlow implements MutatingFlow {
       // they are only written as NS records from the referencing domain.
       requestHostDnsRefresh(targetId);
     }
-    tm().insertAll(entitiesToSave);
+    tm().insertAll(entitiesToInsert);
     return responseBuilder.setResData(HostCreateData.create(targetId, now)).build();
   }
 

core/src/main/java/google/registry/flows/host/HostFlowUtils.java

@@ -15,7 +15,6 @@
 package google.registry.flows.host;
 
 import static google.registry.model.EppResourceUtils.isActive;
-import static google.registry.model.EppResourceUtils.loadByForeignKey;
 import static google.registry.model.tld.Tlds.findTldForName;
 import static google.registry.util.PreconditionsUtils.checkArgumentNotNull;
 import static java.util.stream.Collectors.joining;
@@ -29,6 +28,7 @@ import google.registry.flows.EppException.ParameterValuePolicyErrorException;
 import google.registry.flows.EppException.ParameterValueRangeErrorException;
 import google.registry.flows.EppException.ParameterValueSyntaxErrorException;
 import google.registry.flows.EppException.StatusProhibitsOperationException;
+import google.registry.model.ForeignKeyUtils;
 import google.registry.model.domain.Domain;
 import google.registry.model.eppcommon.StatusValue;
 import google.registry.util.Idn;
@@ -90,7 +90,8 @@ public class HostFlowUtils {
         hostName.parts().stream()
             .skip(hostName.parts().size() - (tld.get().parts().size() + 1))
             .collect(joining("."));
-    Optional<Domain> superordinateDomain = loadByForeignKey(Domain.class, domainName, now);
+    Optional<Domain> superordinateDomain =
+        ForeignKeyUtils.loadResource(Domain.class, domainName, now);
     if (superordinateDomain.isEmpty() || !isActive(superordinateDomain.get(), now)) {
       throw new SuperordinateDomainDoesNotExistException(domainName);
     }

core/src/main/java/google/registry/flows/host/HostUpdateFlow.java

@@ -52,7 +52,6 @@ import google.registry.flows.annotations.ReportingSpec;
 import google.registry.flows.exceptions.ResourceHasClientUpdateProhibitedException;
 import google.registry.model.EppResource;
 import google.registry.model.ForeignKeyUtils;
-import google.registry.model.ImmutableObject;
 import google.registry.model.domain.Domain;
 import google.registry.model.domain.metadata.MetadataExtension;
 import google.registry.model.eppcommon.StatusValue;
@@ -155,7 +154,7 @@ public final class HostUpdateFlow implements MutatingFlow {
     EppResource owningResource = firstNonNull(oldSuperordinateDomain, existingHost);
     verifyUpdateAllowed(
         command, existingHost, newSuperordinateDomain.orElse(null), owningResource, isHostRename);
-    if (isHostRename && ForeignKeyUtils.load(Host.class, newHostName, now) != null) {
+    if (isHostRename && ForeignKeyUtils.loadKey(Host.class, newHostName, now).isPresent()) {
       throw new HostAlreadyExistsException(newHostName);
     }
     AddRemove add = command.getInnerAdd();
@@ -198,16 +197,12 @@ public final class HostUpdateFlow implements MutatingFlow {
             .setPersistedCurrentSponsorRegistrarId(newPersistedRegistrarId)
             .build();
     verifyHasIpsIffIsExternal(command, existingHost, newHost);
-    ImmutableSet.Builder<ImmutableObject> entitiesToInsert = new ImmutableSet.Builder<>();
-    ImmutableSet.Builder<ImmutableObject> entitiesToUpdate = new ImmutableSet.Builder<>();
-    entitiesToUpdate.add(newHost);
     if (isHostRename) {
       updateSuperordinateDomains(existingHost, newHost);
     }
     enqueueTasks(existingHost, newHost);
-    entitiesToInsert.add(historyBuilder.setType(HOST_UPDATE).setHost(newHost).build());
-    tm().updateAll(entitiesToUpdate.build());
-    tm().insertAll(entitiesToInsert.build());
+    tm().update(newHost);
+    tm().insert(historyBuilder.setType(HOST_UPDATE).setHost(newHost).build());
     return responseBuilder.build();
   }
 
@@ -290,7 +285,7 @@ public final class HostUpdateFlow implements MutatingFlow {
         && newHost.isSubordinate()
         && Objects.equals(
             existingHost.getSuperordinateDomain(), newHost.getSuperordinateDomain())) {
-      tm().put(
+      tm().update(
               tm().loadByKey(existingHost.getSuperordinateDomain())
                   .asBuilder()
                   .removeSubordinateHost(existingHost.getHostName())
@@ -299,14 +294,14 @@ public final class HostUpdateFlow implements MutatingFlow {
       return;
     }
     if (existingHost.isSubordinate()) {
-      tm().put(
+      tm().update(
               tm().loadByKey(existingHost.getSuperordinateDomain())
                   .asBuilder()
                   .removeSubordinateHost(existingHost.getHostName())
                   .build());
     }
     if (newHost.isSubordinate()) {
-      tm().put(
+      tm().update(
               tm().loadByKey(newHost.getSuperordinateDomain())
                   .asBuilder()
                   .addSubordinateHost(newHost.getHostName())

core/src/main/java/google/registry/model/EppResourceUtils.java

@@ -16,19 +16,14 @@ package google.registry.model;
 
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.collect.ImmutableSet.toImmutableSet;
-import static google.registry.persistence.transaction.TransactionManagerFactory.replicaTm;
 import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
 import static google.registry.util.DateTimeUtils.START_OF_TIME;
 import static google.registry.util.DateTimeUtils.isAtOrAfter;
 import static google.registry.util.DateTimeUtils.isBeforeOrAt;
-import static google.registry.util.DateTimeUtils.latestOf;
 
-import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.flogger.FluentLogger;
-import google.registry.config.RegistryConfig;
 import google.registry.model.EppResource.BuilderWithTransferData;
-import google.registry.model.EppResource.ForeignKeyedEppResource;
 import google.registry.model.EppResource.ResourceWithTransferData;
 import google.registry.model.contact.Contact;
 import google.registry.model.domain.Domain;
@@ -41,13 +36,9 @@ import google.registry.model.transfer.DomainTransferData;
 import google.registry.model.transfer.TransferData;
 import google.registry.model.transfer.TransferStatus;
 import google.registry.persistence.VKey;
-import google.registry.persistence.transaction.TransactionManager;
 import jakarta.persistence.Query;
-import java.util.Collection;
 import java.util.Comparator;
-import java.util.Optional;
 import java.util.function.Function;
-import java.util.function.Supplier;
 import javax.annotation.Nullable;
 import org.joda.time.DateTime;
 import org.joda.time.Interval;
@@ -90,123 +81,6 @@ public final class EppResourceUtils {
     return (T) resource.cloneProjectedAtTime(now);
   }
 
-  /**
-   * Loads the last created version of an {@link EppResource} from the database by foreign key.
-   *
-   * <p>Returns empty if no resource with this foreign key was ever created, or if the most recently
-   * created resource was deleted before time "now".
-   *
-   * <p>Loading an {@link EppResource} by itself is not sufficient to know its current state since
-   * it may have various expirable conditions and status values that might implicitly change its
-   * state as time progresses even if it has not been updated in the database. Rather, the resource
-   * must be combined with a timestamp to view its current state. We use a global last updated
-   * timestamp on the resource's entity group (which is essentially free since all writes to the
-   * entity group must be serialized anyways) to guarantee monotonically increasing write times, and
-   * forward our projected time to the greater of this timestamp or "now". This guarantees that
-   * we're not projecting into the past.
-   *
-   * @param clazz the resource type to load
-   * @param foreignKey id to match
-   * @param now the current logical time to project resources at
-   */
-  public static <T extends EppResource> Optional<T> loadByForeignKey(
-      Class<T> clazz, String foreignKey, DateTime now) {
-    return loadByForeignKeyHelper(tm(), clazz, foreignKey, now, false);
-  }
-
-  /**
-   * Loads the last created version of an {@link EppResource} from the database by foreign key,
-   * using a cache, if caching is enabled in config settings.
-   *
-   * <p>Returns null if no resource with this foreign key was ever created, or if the most recently
-   * created resource was deleted before time "now".
-   *
-   * <p>Loading an {@link EppResource} by itself is not sufficient to know its current state since
-   * it may have various expirable conditions and status values that might implicitly change its
-   * state as time progresses even if it has not been updated in the database. Rather, the resource
-   * must be combined with a timestamp to view its current state. We use a global last updated
-   * timestamp to guarantee monotonically increasing write times, and forward our projected time to
-   * the greater of this timestamp or "now". This guarantees that we're not projecting into the
-   * past.
-   *
-   * <p>Do not call this cached version for anything that needs transactional consistency. It should
-   * only be used when it's OK if the data is potentially being out of date, e.g. WHOIS.
-   *
-   * @param clazz the resource type to load
-   * @param foreignKey id to match
-   * @param now the current logical time to project resources at
-   */
-  public static <T extends EppResource> Optional<T> loadByForeignKeyByCacheIfEnabled(
-      Class<T> clazz, String foreignKey, DateTime now) {
-    return loadByForeignKeyHelper(
-        tm(), clazz, foreignKey, now, RegistryConfig.isEppResourceCachingEnabled());
-  }
-
-  /**
-   * Loads the last created version of an {@link EppResource} from the replica database by foreign
-   * key, using a cache.
-   *
-   * <p>This method ignores the config setting for caching, and is reserved for use cases that can
-   * tolerate slightly stale data.
-   */
-  public static <T extends EppResource> Optional<T> loadByForeignKeyByCache(
-      Class<T> clazz, String foreignKey, DateTime now) {
-    return loadByForeignKeyHelper(replicaTm(), clazz, foreignKey, now, true);
-  }
-
-  private static <T extends EppResource> Optional<T> loadByForeignKeyHelper(
-      TransactionManager txnManager,
-      Class<T> clazz,
-      String foreignKey,
-      DateTime now,
-      boolean useCache) {
-    checkArgument(
-        ForeignKeyedEppResource.class.isAssignableFrom(clazz),
-        "loadByForeignKey may only be called for foreign keyed EPP resources");
-    VKey<T> key =
-        useCache
-            ? ForeignKeyUtils.loadByCache(clazz, ImmutableList.of(foreignKey), now).get(foreignKey)
-            : ForeignKeyUtils.load(clazz, foreignKey, now);
-    // The returned key is null if the resource is hard deleted or soft deleted by the given time.
-    if (key == null) {
-      return Optional.empty();
-    }
-    T resource =
-        useCache
-            ? EppResource.loadByCache(key)
-            // This transaction is buried very deeply inside many outer nested calls, hence merits
-            // the use of reTransact() for now pending a substantial refactoring.
-            : txnManager.reTransact(() -> txnManager.loadByKeyIfPresent(key).orElse(null));
-    if (resource == null || isAtOrAfter(now, resource.getDeletionTime())) {
-      return Optional.empty();
-    }
-    // When setting status values based on a time, choose the greater of "now" and the resource's
-    // UpdateAutoTimestamp. For non-mutating uses (info, whois, etc.), this is equivalent to rolling
-    // "now" forward to at least the last update on the resource, so that a read right after a write
-    // doesn't appear stale. For mutating flows, if we had to roll now forward then the flow will
-    // fail when it tries to save anything, since "now" is needed to be > the last update time for
-    // writes.
-    return Optional.of(
-        cloneProjectedAtTime(
-            resource, latestOf(now, resource.getUpdateTimestamp().getTimestamp())));
-  }
-
-  /**
-   * Checks multiple {@link EppResource} objects from the database by unique ids.
-   *
-   * <p>There are currently no resources that support checks and do not use foreign keys. If we need
-   * to support that case in the future, we can loosen the type to allow any {@link EppResource} and
-   * add code to do the lookup by id directly.
-   *
-   * @param clazz the resource type to load
-   * @param uniqueIds a list of ids to match
-   * @param now the logical time of the check
-   */
-  public static <T extends EppResource> ImmutableSet<String> checkResourcesExist(
-      Class<T> clazz, Collection<String> uniqueIds, final DateTime now) {
-    return ForeignKeyUtils.load(clazz, uniqueIds, now).keySet();
-  }
-
   /**
    * Returns a Function that transforms an EppResource to the given DateTime, suitable for use with
    * Iterables.transform() over a collection of EppResources.
@@ -306,21 +180,6 @@ public final class EppResourceUtils {
             : null);
   }
 
-  /**
-   * Rewinds an {@link EppResource} object to a given point in time.
-   *
-   * <p>This method costs nothing if {@code resource} is already current. Otherwise, it returns an
-   * async operation that performs a single fetch operation.
-   *
-   * @return an asynchronous operation returning resource at {@code timestamp} or {@code null} if
-   *     resource is deleted or not yet created
-   * @see #loadAtPointInTime(EppResource, DateTime)
-   */
-  public static <T extends EppResource> Supplier<T> loadAtPointInTimeAsync(
-      final T resource, final DateTime timestamp) {
-    return () -> loadAtPointInTime(resource, timestamp);
-  }
-
   /**
    * Returns the most recent revision of a given EppResource before or at the provided timestamp,
    * falling back to using the resource as-is if there are no revisions.
@@ -395,13 +254,11 @@ public final class EppResourceUtils {
   /**
    * Returns whether the given contact or host is linked to (that is, referenced by) a domain.
    *
-   * <p>This is an eventually consistent query.
-   *
    * @param key the referent key
    * @param now the logical time of the check
    */
   public static boolean isLinked(VKey<? extends EppResource> key, DateTime now) {
-    return getLinkedDomainKeys(key, now, 1).size() > 0;
+    return !getLinkedDomainKeys(key, now, 1).isEmpty();
   }
 
   private EppResourceUtils() {}

core/src/main/java/google/registry/model/ForeignKeyUtils.java

@@ -41,13 +41,17 @@ import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Optional;
 import java.util.Set;
-import javax.annotation.Nullable;
 import org.joda.time.DateTime;
 
 /**
- * Util class to map a foreign key to the {@link VKey} to the active instance of {@link EppResource}
- * whose unique repoId matches the foreign key string at a given time. The instance is never
- * deleted, but it is updated if a newer entity becomes the active entity.
+ * Util class for mapping a foreign key to a {@link VKey} or {@link EppResource}.
+ *
+ * <p>We return the resource that matches the foreign key at a given time (this may vary over time
+ * e.g. if a domain expires and is re-registered). The instance is never deleted, but it is updated
+ * if a newer entity becomes the active entity.
+ *
+ * <p>One can retrieve either the {@link VKey} (the repo ID) in the situations where that's
+ * sufficient, or the resource itself, either with or without caching.
  */
 public final class ForeignKeyUtils {
 
@@ -60,21 +64,30 @@ public final class ForeignKeyUtils {
               Domain.class, "domainName",
               Host.class, "hostName");
 
+  public record MostRecentResource(String repoId, DateTime deletionTime) {}
+
   /**
-   * Loads a {@link VKey} to an {@link EppResource} from the database by foreign key.
+   * Loads an optional {@link VKey} to an {@link EppResource} from the database by foreign key.
    *
-   * <p>Returns null if no resource with this foreign key was ever created, or if the most recently
+   * <p>Returns empty if no resource with this foreign key was ever created, or if the most recently
    * created resource was deleted before time "now".
-   *
-   * @param clazz the resource type to load
-   * @param foreignKey foreign key to match
-   * @param now the current logical time to use when checking for soft deletion of the foreign key
-   *     index
    */
-  @Nullable
-  public static <E extends EppResource> VKey<E> load(
+  public static <E extends EppResource> Optional<VKey<E>> loadKey(
       Class<E> clazz, String foreignKey, DateTime now) {
-    return load(clazz, ImmutableList.of(foreignKey), now).get(foreignKey);
+    return Optional.ofNullable(loadKeys(clazz, ImmutableList.of(foreignKey), now).get(foreignKey));
+  }
+
+  /**
+   * Loads an {@link EppResource} from the database by foreign key.
+   *
+   * <p>Returns null if no resource with this foreign key was ever created or if the most recently
+   * created resource was deleted before time "now".
+   */
+  public static <E extends EppResource> Optional<E> loadResource(
+      Class<E> clazz, String foreignKey, DateTime now) {
+    // Note: no need to project to "now" because loadResources already does
+    return Optional.ofNullable(
+        loadResources(clazz, ImmutableList.of(foreignKey), now).get(foreignKey));
   }
 
   /**
@@ -84,13 +97,28 @@ public final class ForeignKeyUtils {
    * <p>The returned map will omit any foreign keys for which the {@link EppResource} doesn't exist
    * or has been soft-deleted.
    */
-  public static <E extends EppResource> ImmutableMap<String, VKey<E>> load(
-      Class<E> clazz, Collection<String> foreignKeys, final DateTime now) {
-    return load(clazz, foreignKeys, false).entrySet().stream()
+  public static <E extends EppResource> ImmutableMap<String, VKey<E>> loadKeys(
+      Class<E> clazz, Collection<String> foreignKeys, DateTime now) {
+    return loadMostRecentResources(clazz, foreignKeys, false).entrySet().stream()
         .filter(e -> now.isBefore(e.getValue().deletionTime()))
         .collect(toImmutableMap(Entry::getKey, e -> VKey.create(clazz, e.getValue().repoId())));
   }
 
+  /**
+   * Load a map of {@link String} foreign keys to the {@link EppResource} that are active at or
+   * after the specified moment in time.
+   *
+   * <p>The returned map will omit any foreign keys for which the {@link EppResource} doesn't exist
+   * or has been soft-deleted.
+   */
+  @SuppressWarnings("unchecked")
+  public static <E extends EppResource> ImmutableMap<String, E> loadResources(
+      Class<E> clazz, Collection<String> foreignKeys, DateTime now) {
+    return loadMostRecentResourceObjects(clazz, foreignKeys, false).entrySet().stream()
+        .filter(e -> now.isBefore(e.getValue().getDeletionTime()))
+        .collect(toImmutableMap(Entry::getKey, e -> (E) e.getValue().cloneProjectedAtTime(now)));
+  }
+
   /**
    * Helper method to load {@link VKey}s to all the most recent {@link EppResource}s for the given
    * foreign keys, regardless of whether they have been soft-deleted.
@@ -104,8 +132,9 @@ public final class ForeignKeyUtils {
    * same max {@code deleteTime}, usually {@code END_OF_TIME}, lest this method throws an error due
    * to duplicate keys.
    */
-  private static <E extends EppResource> ImmutableMap<String, MostRecentResource> load(
-      Class<E> clazz, Collection<String> foreignKeys, boolean useReplicaTm) {
+  public static <E extends EppResource>
+      ImmutableMap<String, MostRecentResource> loadMostRecentResources(
+          Class<E> clazz, Collection<String> foreignKeys, boolean useReplicaTm) {
     String fkProperty = RESOURCE_TYPE_TO_FK_PROPERTY.get(clazz);
     JpaTransactionManager tmToUse = useReplicaTm ? replicaTm() : tm();
     return tmToUse.reTransact(
@@ -123,22 +152,49 @@ public final class ForeignKeyUtils {
                 .collect(
                     toImmutableMap(
                         row -> (String) row[0],
-                        row -> MostRecentResource.create((String) row[1], (DateTime) row[2]))));
+                        row -> new MostRecentResource((String) row[1], (DateTime) row[2]))));
   }
 
-  private static final CacheLoader<VKey<? extends EppResource>, Optional<MostRecentResource>>
-      CACHE_LOADER =
-          new CacheLoader<>() {
+  /** Method to load the most recent {@link EppResource}s for the given foreign keys. */
+  private static <E extends EppResource> ImmutableMap<String, E> loadMostRecentResourceObjects(
+      Class<E> clazz, Collection<String> foreignKeys, boolean useReplicaTm) {
+    String fkProperty = RESOURCE_TYPE_TO_FK_PROPERTY.get(clazz);
+    JpaTransactionManager tmToUse = useReplicaTm ? replicaTm() : tm();
+    return tmToUse.reTransact(
+        () ->
+            tmToUse
+                .query(
+                    ("FROM %entity% WHERE (%fkProperty%, deletionTime) IN (SELECT %fkProperty%, "
+                            + "MAX(deletionTime) FROM %entity% WHERE %fkProperty% IN (:fks) "
+                            + "GROUP BY %fkProperty%)")
+                        .replace("%fkProperty%", fkProperty)
+                        .replace("%entity%", clazz.getSimpleName()),
+                    clazz)
+                .setParameter("fks", foreignKeys)
+                .getResultStream()
+                .collect(toImmutableMap(EppResource::getForeignKey, e -> e)));
+  }
 
+  /**
+   * Cache loader for loading repo IDs and deletion times for the given foreign keys.
+   *
+   * <p>Note: while this is given a {@link VKey}, one cannot use that key to load directly from the
+   * database. That key is basically used to signify a foreign-key + resource-type pairing.
+   */
+  private static final CacheLoader<VKey<? extends EppResource>, Optional<MostRecentResource>>
+      REPO_ID_CACHE_LOADER =
+          new CacheLoader<>() {
             @Override
             public Optional<MostRecentResource> load(VKey<? extends EppResource> key) {
-              return loadAll(ImmutableSet.of(key)).get(key);
+              String foreignKey = (String) key.getKey();
+              return Optional.ofNullable(
+                  loadMostRecentResources(key.getKind(), ImmutableList.of(foreignKey), true)
+                      .get(foreignKey));
             }
 
             @Override
-            public Map<
-                    ? extends VKey<? extends EppResource>, ? extends Optional<MostRecentResource>>
-                loadAll(Set<? extends VKey<? extends EppResource>> keys) {
+            public Map<VKey<? extends EppResource>, ? extends Optional<MostRecentResource>> loadAll(
+                Set<? extends VKey<? extends EppResource>> keys) {
               if (keys.isEmpty()) {
                 return ImmutableMap.of();
               }
@@ -148,7 +204,7 @@ public final class ForeignKeyUtils {
               ImmutableList<String> foreignKeys =
                   keys.stream().map(key -> (String) key.getKey()).collect(toImmutableList());
               ImmutableMap<String, MostRecentResource> existingKeys =
-                  ForeignKeyUtils.load(clazz, foreignKeys, true);
+                  loadMostRecentResources(clazz, foreignKeys, true);
               // The above map only contains keys that exist in the database, so we re-add the
               // missing ones with Optional.empty() values for caching.
               return Maps.asMap(
@@ -158,11 +214,10 @@ public final class ForeignKeyUtils {
           };
 
   /**
-   * A limited size, limited time cache for foreign-keyed entities.
+   * A limited size, limited time cache for mapping foreign keys to repo IDs.
    *
-   * <p>This is only used to cache foreign-keyed entities for the purposes of checking whether they
-   * exist (and if so, what entity they point to) during a few domain flows. Any other operations on
-   * foreign keys should not use this cache.
+   * <p>This is only used to cache foreign-keyed entity keys for the purposes of checking whether
+   * they exist (and if so, what entity they point to).
    *
    * <p>Note that here the key of the {@link LoadingCache} is of type {@code VKey<? extends
    * EppResource>}, but they are not legal {@link VKey}s to {@link EppResource}s, whose keys are the
@@ -176,22 +231,26 @@ public final class ForeignKeyUtils {
    * our system that actually exist. So we cache the fact that they *don't* exist by using
    * Optional.empty(), then several layers up the EPP command will fail with an error message like
    * "The contact with given IDs (blah) don't exist."
+   *
+   * <p>If one wishes to load the entity itself via cache, use the {@link
+   * #foreignKeyToResourceCache} instead, as that loads the entity instead. This cache is used for
+   * situations where the repo ID, or the existence of the repo ID, is sufficient.
    */
   @NonFinalForTesting
   private static LoadingCache<VKey<? extends EppResource>, Optional<MostRecentResource>>
-      foreignKeyCache = createForeignKeyMapCache(getEppResourceCachingDuration());
+      foreignKeyToRepoIdCache = createForeignKeyToRepoIdCache(getEppResourceCachingDuration());
 
   private static LoadingCache<VKey<? extends EppResource>, Optional<MostRecentResource>>
-      createForeignKeyMapCache(Duration expiry) {
+      createForeignKeyToRepoIdCache(Duration expiry) {
     return CacheUtils.newCacheBuilder(expiry)
         .maximumSize(getEppResourceMaxCachedEntries())
-        .build(CACHE_LOADER);
+        .build(REPO_ID_CACHE_LOADER);
   }
 
   @VisibleForTesting
-  public static void setCacheForTest(Optional<Duration> expiry) {
+  public static void setRepoIdCacheForTest(Optional<Duration> expiry) {
     Duration effectiveExpiry = expiry.orElse(getEppResourceCachingDuration());
-    foreignKeyCache = createForeignKeyMapCache(effectiveExpiry);
+    foreignKeyToRepoIdCache = createForeignKeyToRepoIdCache(effectiveExpiry);
   }
 
   /**
@@ -204,26 +263,12 @@ public final class ForeignKeyUtils {
    * <p>Don't use the cached version of this method unless you really need it for performance
    * reasons, and are OK with the trade-offs in loss of transactional consistency.
    */
-  public static <E extends EppResource> ImmutableMap<String, VKey<E>> loadByCacheIfEnabled(
-      Class<E> clazz, Collection<String> foreignKeys, final DateTime now) {
+  public static <E extends EppResource> ImmutableMap<String, VKey<E>> loadKeysByCacheIfEnabled(
+      Class<E> clazz, Collection<String> foreignKeys, DateTime now) {
     if (!RegistryConfig.isEppResourceCachingEnabled()) {
-      return load(clazz, foreignKeys, now);
+      return loadKeys(clazz, foreignKeys, now);
     }
-    return loadByCache(clazz, foreignKeys, now);
-  }
-
-  /**
-   * Load a list of {@link VKey} to {@link EppResource} instances by class and foreign key strings
-   * that are active at or after the specified moment in time, using the cache.
-   *
-   * <p>The returned map will omit any keys for which the {@link EppResource} doesn't exist or has
-   * been soft-deleted.
-   *
-   * <p>This method is reserved for use cases that can tolerate slightly stale data.
-   */
-  public static <E extends EppResource> ImmutableMap<String, VKey<E>> loadByCache(
-      Class<E> clazz, Collection<String> foreignKeys, final DateTime now) {
-    return foreignKeyCache
+    return foreignKeyToRepoIdCache
         .getAll(foreignKeys.stream().map(fk -> VKey.create(clazz, fk)).collect(toImmutableList()))
         .entrySet()
         .stream()
@@ -234,10 +279,127 @@ public final class ForeignKeyUtils {
                 e -> VKey.create(clazz, e.getValue().get().repoId())));
   }
 
-  record MostRecentResource(String repoId, DateTime deletionTime) {
+  /** Loads an optional {@link VKey} to an {@link EppResource} using the cache. */
+  public static <E extends EppResource> Optional<VKey<E>> loadKeyByCache(
+      Class<E> clazz, String foreignKey, DateTime now) {
+    return foreignKeyToRepoIdCache
+        .get(VKey.create(clazz, foreignKey))
+        .filter(mrr -> now.isBefore(mrr.deletionTime()))
+        .map(mrr -> VKey.create(clazz, mrr.repoId()));
+  }
 
-    static MostRecentResource create(String repoId, DateTime deletionTime) {
-      return new MostRecentResource(repoId, deletionTime);
-    }
+  /**
+   * Cache loader for loading {@link EppResource}s for the given foreign keys.
+   *
+   * <p>Note: while this is given a {@link VKey}, one cannot use that key to load directly from the
+   * database. That key is basically used to signify a foreign-key + resource-type pairing.
+   */
+  private static final CacheLoader<VKey<? extends EppResource>, Optional<? extends EppResource>>
+      RESOURCE_CACHE_LOADER =
+          new CacheLoader<>() {
+            @Override
+            public Optional<? extends EppResource> load(VKey<? extends EppResource> key) {
+              String foreignKey = (String) key.getKey();
+              return Optional.ofNullable(
+                  loadMostRecentResourceObjects(key.getKind(), ImmutableList.of(foreignKey), true)
+                      .get(foreignKey));
+            }
+
+            @Override
+            public Map<VKey<? extends EppResource>, Optional<? extends EppResource>> loadAll(
+                Set<? extends VKey<? extends EppResource>> keys) {
+              if (keys.isEmpty()) {
+                return ImmutableMap.of();
+              }
+              // It is safe to use the resource type of first element because when this function is
+              // called, it is always passed with a list of VKeys with the same type.
+              Class<? extends EppResource> clazz = keys.iterator().next().getKind();
+              ImmutableList<String> foreignKeys =
+                  keys.stream().map(key -> (String) key.getKey()).collect(toImmutableList());
+              ImmutableMap<String, ? extends EppResource> existingResources =
+                  loadMostRecentResourceObjects(clazz, foreignKeys, true);
+              // The above map only contains resources that exist in the database, so we re-add the
+              // missing ones with Optional.empty() values for caching.
+              return Maps.asMap(
+                  ImmutableSet.copyOf(keys),
+                  key -> Optional.ofNullable(existingResources.get((String) key.getKey())));
+            }
+          };
+
+  /**
+   * An additional limited size, limited time cache for foreign-keyed entities.
+   *
+   * <p>Note that here the key of the {@link LoadingCache} is of type {@code VKey<? extends
+   * EppResource>}, but they are not legal {@link VKey}s to {@link EppResource}s, whose keys are the
+   * SQL primary keys, i.e., the {@code repoId}s. Instead, their keys are the foreign keys used to
+   * query the database. We use {@link VKey} here because it is a convenient composite class that
+   * contains both the resource type and the foreign key, which are needed to for the query and
+   * caching.
+   *
+   * <p>Also note that the value type of this cache is {@link Optional} because the foreign keys in
+   * question are coming from external commands, and thus don't necessarily represent entities in
+   * our system that actually exist. So we cache the fact that they *don't* exist by using
+   * Optional.empty(), then several layers up the EPP command will fail with an error message like
+   * "The contact with given IDs (blah) don't exist."
+   *
+   * <p>This cache bypasses the foreign-key-to-repo-ID lookup and maps directly from the foreign key
+   * to the entity itself (at least, at this point in time).
+   */
+  private static LoadingCache<VKey<? extends EppResource>, Optional<? extends EppResource>>
+      foreignKeyToResourceCache = createForeignKeyToResourceCache(getEppResourceCachingDuration());
+
+  private static LoadingCache<VKey<? extends EppResource>, Optional<? extends EppResource>>
+      createForeignKeyToResourceCache(Duration expiry) {
+    return CacheUtils.newCacheBuilder(expiry)
+        .maximumSize(getEppResourceMaxCachedEntries())
+        .build(RESOURCE_CACHE_LOADER);
+  }
+
+  @VisibleForTesting
+  public static void setResourceCacheForTest(Optional<Duration> expiry) {
+    Duration effectiveExpiry = expiry.orElse(getEppResourceCachingDuration());
+    foreignKeyToResourceCache = createForeignKeyToResourceCache(effectiveExpiry);
+  }
+
+  /**
+   * Loads the last created version of an {@link EppResource} from the database by foreign key,
+   * using a cache, if caching is enabled in config settings.
+   *
+   * <p>Returns null if no resource with this foreign key was ever created, or if the most recently
+   * created resource was deleted before time "now".
+   *
+   * <p>Loading an {@link EppResource} by itself is not sufficient to know its current state since
+   * it may have various expirable conditions and status values that might implicitly change its
+   * state as time progresses even if it has not been updated in the database. Rather, the resource
+   * must be combined with a timestamp to view its current state. We use a global last updated
+   * timestamp to guarantee monotonically increasing write times, and forward our projected time to
+   * the greater of this timestamp or "now". This guarantees that we're not projecting into the
+   * past.
+   *
+   * <p>Do not call this cached version for anything that needs transactional consistency. It should
+   * only be used when it's OK if the data is potentially being out of date, e.g. RDAP.
+   */
+  public static <E extends EppResource> Optional<E> loadResourceByCacheIfEnabled(
+      Class<E> clazz, String foreignKey, DateTime now) {
+    return RegistryConfig.isEppResourceCachingEnabled()
+        ? loadResourceByCache(clazz, foreignKey, now)
+        : loadResource(clazz, foreignKey, now);
+  }
+
+  /**
+   * Loads the last created version of an {@link EppResource} from the replica database by foreign
+   * key, using a cache.
+   *
+   * <p>This method ignores the config setting for caching, and is reserved for use cases that can
+   * tolerate slightly stale data.
+   */
+  @SuppressWarnings("unchecked")
+  public static <E extends EppResource> Optional<E> loadResourceByCache(
+      Class<E> clazz, String foreignKey, DateTime now) {
+    return (Optional<E>)
+        foreignKeyToResourceCache
+            .get(VKey.create(clazz, foreignKey))
+            .filter(e -> now.isBefore(e.getDeletionTime()))
+            .map(e -> e.cloneProjectedAtTime(now));
   }
 }

core/src/main/java/google/registry/model/GetterDelegate.java

@@ -0,0 +1,49 @@
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.model;
+
+import static java.lang.annotation.ElementType.FIELD;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+/**
+ * A delegate getter method to be used when getting the value of an {@link ImmutableObject} field.
+ *
+ * <p>This is useful because Hibernate has limitations on what kinds of types can be used to
+ * represent a field value, the most relevant being that it must be mutable. Since we use Guava's
+ * ImmutableCollections widely, this means that a frequent pattern is to e.g. have a field be
+ * declared as a Set (with a HashSet implementation), but then implement a getter method for that
+ * field that returns the desired ImmutableSet or ImmutableSortedSet. For purposes where it matters
+ * that the field be represented using the appropriate type, such as for outputting in sorted order
+ * via toString, then declare a getter delegate as follows:
+ *
+ * <pre>{@code
+ * @GetterDelegate(methodName = "getAllowedTlds")
+ * Set<String> allowedTlds;
+ *
+ * public ImmutableSortedSet<String> getAllowedTlds() {
+ *   return nullToEmptyImmutableSortedCopy(allowedTlds);
+ * }
+ * }</pre>
+ */
+@Documented
+@Retention(RUNTIME)
+@Target(FIELD)
+public @interface GetterDelegate {
+  String methodName();
+}

core/src/main/java/google/registry/model/ModelUtils.java

@@ -76,11 +76,20 @@ public class ModelUtils {
     return ALL_FIELDS_CACHE.get(clazz);
   }
 
-  /** Retrieves a field value via reflection. */
+  /**
+   * Retrieves a field value via reflection, using the field's {@link GetterDelegate} if present.
+   */
   static Object getFieldValue(Object instance, Field field) {
     try {
-      return field.get(instance);
-    } catch (IllegalAccessException e) {
+      if (field.isAnnotationPresent(GetterDelegate.class)) {
+        return instance
+            .getClass()
+            .getMethod(field.getAnnotation(GetterDelegate.class).methodName())
+            .invoke(instance);
+      } else {
+        return field.get(instance);
+      }
+    } catch (Exception e) {
       throw new IllegalStateException(e);
     }
   }

core/src/main/java/google/registry/model/domain/DomainCommand.java

@@ -442,7 +442,7 @@ public class DomainCommand {
       final Set<String> foreignKeys, final Class<T> clazz, final DateTime now)
       throws InvalidReferencesException {
     ImmutableMap<String, VKey<T>> fks =
-        ForeignKeyUtils.loadByCacheIfEnabled(clazz, foreignKeys, now);
+        ForeignKeyUtils.loadKeysByCacheIfEnabled(clazz, foreignKeys, now);
     if (!fks.keySet().equals(foreignKeys)) {
       throw new InvalidReferencesException(
           clazz, ImmutableSet.copyOf(difference(foreignKeys, fks.keySet())));

core/src/main/java/google/registry/model/domain/fee/Fee.java

@@ -64,6 +64,7 @@ public class Fee extends BaseFee {
 
   public static final ImmutableSet<String> FEE_EXTENSION_URIS =
       ImmutableSet.of(
+          ServiceExtension.FEE_1_00.getUri(),
           ServiceExtension.FEE_0_12.getUri(),
           ServiceExtension.FEE_0_11.getUri(),
           ServiceExtension.FEE_0_6.getUri());

core/src/main/java/google/registry/model/domain/feestdv1/FeeCheckCommandExtensionItemStdV1.java

@@ -0,0 +1,112 @@
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.model.domain.feestdv1;
+
+import com.google.common.base.Ascii;
+import google.registry.model.domain.Period;
+import google.registry.model.domain.fee.FeeCheckCommandExtensionItem;
+import jakarta.xml.bind.annotation.XmlAttribute;
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlType;
+import java.util.Locale;
+import java.util.Optional;
+import org.joda.money.CurrencyUnit;
+import org.joda.time.DateTime;
+
+/**
+ * An individual price check item in version 1.0 of the fee extension on domain check commands.
+ * Items look like:
+ *
+ * <pre>{@code
+ * <fee:command name="renew" phase="sunrise" subphase="hello">
+ *   <fee:period unit="y">1</fee:period>
+ *   <fee:class>premium</fee:class>
+ *   <fee:date>2017-05-17T13:22:21.0Z</fee:date>
+ * </fee:command>
+ * }</pre>
+ */
+@XmlType(propOrder = {"period", "feeClass", "feeDate"})
+public class FeeCheckCommandExtensionItemStdV1 extends FeeCheckCommandExtensionItem {
+
+  /** The default validity period (if not specified) is 1 year for all operations. */
+  static final Period DEFAULT_PERIOD = Period.create(1, Period.Unit.YEARS);
+
+  @XmlAttribute(name = "name")
+  String commandName;
+
+  @XmlAttribute String phase;
+
+  @XmlAttribute String subphase;
+
+  @XmlElement(name = "class")
+  String feeClass;
+
+  @XmlElement(name = "date")
+  DateTime feeDate;
+
+  /** Version 1.0 does not support domain name or currency in fee extension items. */
+  @Override
+  public boolean isDomainNameSupported() {
+    return false;
+  }
+
+  @Override
+  public String getDomainName() {
+    throw new UnsupportedOperationException("Domain not supported");
+  }
+
+  @Override
+  public CurrencyUnit getCurrency() {
+    return null; // This version of the fee extension doesn't specify currency per-item.
+  }
+
+  @Override
+  public String getUnparsedCommandName() {
+    return commandName;
+  }
+
+  @Override
+  public CommandName getCommandName() {
+    // Require the xml string to be lowercase.
+    if (commandName != null && commandName.toLowerCase(Locale.ENGLISH).equals(commandName)) {
+      try {
+        return CommandName.valueOf(Ascii.toUpperCase(commandName));
+      } catch (IllegalArgumentException e) {
+        // Swallow this and return UNKNOWN below because there's no matching CommandName.
+      }
+    }
+    return CommandName.UNKNOWN;
+  }
+
+  @Override
+  public String getPhase() {
+    return phase;
+  }
+
+  @Override
+  public String getSubphase() {
+    return subphase;
+  }
+
+  @Override
+  public FeeCheckResponseExtensionItemStdV1.Builder createResponseBuilder() {
+    return new FeeCheckResponseExtensionItemStdV1.Builder();
+  }
+
+  @Override
+  public Optional<DateTime> getEffectiveDate() {
+    return Optional.ofNullable(feeDate);
+  }
+}

core/src/main/java/google/registry/model/domain/feestdv1/FeeCheckCommandExtensionStdV1.java

@@ -0,0 +1,63 @@
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.model.domain.feestdv1;
+
+import static google.registry.util.CollectionUtils.nullToEmptyImmutableCopy;
+
+import com.google.common.collect.ImmutableList;
+import google.registry.model.ImmutableObject;
+import google.registry.model.domain.fee.FeeCheckCommandExtension;
+import google.registry.model.domain.fee.FeeCheckResponseExtensionItem;
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlRootElement;
+import jakarta.xml.bind.annotation.XmlType;
+import java.util.List;
+import org.joda.money.CurrencyUnit;
+
+/** Version 1.0 of the fee extension that may be present on domain check commands. */
+@XmlRootElement(name = "check")
+@XmlType(propOrder = {"currency", "items"})
+public class FeeCheckCommandExtensionStdV1 extends ImmutableObject
+    implements FeeCheckCommandExtension<
+        FeeCheckCommandExtensionItemStdV1, FeeCheckResponseExtensionStdV1> {
+
+  CurrencyUnit currency;
+
+  @Override
+  public CurrencyUnit getCurrency() {
+    return currency;
+  }
+
+  @XmlElement(name = "command")
+  List<FeeCheckCommandExtensionItemStdV1> items;
+
+  @Override
+  public ImmutableList<FeeCheckCommandExtensionItemStdV1> getItems() {
+    return nullToEmptyImmutableCopy(items);
+  }
+
+  @Override
+  public FeeCheckResponseExtensionStdV1 createResponse(
+      ImmutableList<? extends FeeCheckResponseExtensionItem> items) {
+    ImmutableList.Builder<FeeCheckResponseExtensionItemStdV1> builder =
+        new ImmutableList.Builder<>();
+    for (FeeCheckResponseExtensionItem item : items) {
+      if (item instanceof FeeCheckResponseExtensionItemStdV1) {
+        builder.add((FeeCheckResponseExtensionItemStdV1) item);
+      }
+    }
+    return FeeCheckResponseExtensionStdV1.create(currency, builder.build());
+  }
+}

core/src/main/java/google/registry/model/domain/feestdv1/FeeCheckResponseExtensionItemCommandStdV1.java

@@ -0,0 +1,119 @@
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.model.domain.feestdv1;
+
+import static google.registry.util.CollectionUtils.forceEmptyToNull;
+
+import com.google.common.base.Ascii;
+import com.google.common.collect.ImmutableList;
+import google.registry.model.Buildable;
+import google.registry.model.ImmutableObject;
+import google.registry.model.domain.Period;
+import google.registry.model.domain.fee.Fee;
+import google.registry.model.domain.fee.FeeQueryCommandExtensionItem.CommandName;
+import jakarta.xml.bind.annotation.XmlAttribute;
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlType;
+import java.util.List;
+import org.joda.time.DateTime;
+
+/** The version 1.0 response command entity for a domain check on a single resource. */
+@XmlType(propOrder = {"period", "fee", "feeClass", "effectiveDate", "notAfterDate"})
+public class FeeCheckResponseExtensionItemCommandStdV1 extends ImmutableObject {
+
+  /** The command that was checked. */
+  @XmlAttribute(name = "name")
+  String commandName;
+
+  /** The phase that was checked. */
+  @XmlAttribute String phase;
+
+  /** The subphase that was checked. */
+  @XmlAttribute String subphase;
+
+  /** The period that was checked. */
+  Period period;
+
+  /**
+   * The magnitude of the fee, in the specified units, with an optional description.
+   *
+   * <p>This is a list because a single operation can involve multiple fees.
+   */
+  List<Fee> fee;
+
+  /**
+   * The type of the fee.
+   *
+   * <p>We will use "premium" for fees on premium names, and omit the field otherwise.
+   */
+  @XmlElement(name = "class")
+  String feeClass;
+
+  /** The effective date that the check is to be performed on (if specified in the query). */
+  @XmlElement(name = "date")
+  DateTime effectiveDate;
+
+  /** The date after which the quoted fee is no longer valid (if applicable). */
+  @XmlElement(name = "notAfter")
+  DateTime notAfterDate;
+
+  public String getFeeClass() {
+    return feeClass;
+  }
+
+  /** Builder for {@link FeeCheckResponseExtensionItemCommandStdV1}. */
+  public static class Builder extends Buildable.Builder<FeeCheckResponseExtensionItemCommandStdV1> {
+
+    public Builder setCommandName(CommandName commandName) {
+      getInstance().commandName = Ascii.toLowerCase(commandName.name());
+      return this;
+    }
+
+    public Builder setPhase(String phase) {
+      getInstance().phase = phase;
+      return this;
+    }
+
+    public Builder setSubphase(String subphase) {
+      getInstance().subphase = subphase;
+      return this;
+    }
+
+    public Builder setPeriod(Period period) {
+      getInstance().period = period;
+      return this;
+    }
+
+    public Builder setEffectiveDate(DateTime effectiveDate) {
+      getInstance().effectiveDate = effectiveDate;
+      return this;
+    }
+
+    public Builder setNotAfterDate(DateTime notAfterDate) {
+      getInstance().notAfterDate = notAfterDate;
+      return this;
+    }
+
+    public Builder setFee(List<Fee> fees) {
+      getInstance().fee = forceEmptyToNull(ImmutableList.copyOf(fees));
+      return this;
+    }
+
+    public Builder setClass(String feeClass) {
+      getInstance().feeClass = feeClass;
+      return this;
+    }
+  }
+}

core/src/main/java/google/registry/model/domain/feestdv1/FeeCheckResponseExtensionItemStdV1.java

@@ -0,0 +1,122 @@
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.model.domain.feestdv1;
+
+import static google.registry.util.CollectionUtils.forceEmptyToNull;
+
+import com.google.common.collect.ImmutableList;
+import google.registry.model.domain.DomainObjectSpec;
+import google.registry.model.domain.Period;
+import google.registry.model.domain.fee.Fee;
+import google.registry.model.domain.fee.FeeCheckResponseExtensionItem;
+import google.registry.model.domain.fee.FeeQueryCommandExtensionItem.CommandName;
+import jakarta.xml.bind.annotation.XmlType;
+import org.joda.time.DateTime;
+
+/** The version 1.0 response for a domain check on a single resource. */
+@XmlType(propOrder = {"object", "command"})
+public class FeeCheckResponseExtensionItemStdV1 extends FeeCheckResponseExtensionItem {
+
+  /** The domain that was checked. */
+  DomainObjectSpec object;
+
+  /** The command that was checked. */
+  FeeCheckResponseExtensionItemCommandStdV1 command;
+
+  /**
+   * This method is overridden and not annotated for JAXB because this version of the extension
+   * doesn't support "period".
+   */
+  @Override
+  public Period getPeriod() {
+    return super.getPeriod();
+  }
+
+  /**
+   * This method is overridden and not annotated for JAXB because this version of the extension
+   * doesn't support "fee".
+   */
+  @Override
+  public ImmutableList<Fee> getFees() {
+    return super.getFees();
+  }
+
+  /**
+   * This method is not annotated for JAXB because this version of the extension doesn't support
+   * "feeClass" and because the data comes off of the command object rather than a field.
+   */
+  @Override
+  public String getFeeClass() {
+    return command.getFeeClass();
+  }
+
+  /** Builder for {@link FeeCheckResponseExtensionItemStdV1}. */
+  public static class Builder
+      extends FeeCheckResponseExtensionItem.Builder<FeeCheckResponseExtensionItemStdV1> {
+
+    final FeeCheckResponseExtensionItemCommandStdV1.Builder commandBuilder =
+        new FeeCheckResponseExtensionItemCommandStdV1.Builder();
+
+    @Override
+    public Builder setCommand(CommandName commandName, String phase, String subphase) {
+      commandBuilder.setCommandName(commandName);
+      commandBuilder.setPhase(phase);
+      commandBuilder.setSubphase(subphase);
+      return this;
+    }
+
+    @Override
+    public Builder setPeriod(Period period) {
+      commandBuilder.setPeriod(period);
+      return this;
+    }
+
+    @Override
+    public Builder setFees(ImmutableList<Fee> fees) {
+      commandBuilder.setFee(forceEmptyToNull(ImmutableList.copyOf(fees)));
+      return this;
+    }
+
+    @Override
+    public Builder setClass(String feeClass) {
+      commandBuilder.setClass(feeClass);
+      return this;
+    }
+
+    @Override
+    public Builder setDomainNameIfSupported(String name) {
+      getInstance().object = new DomainObjectSpec(name);
+      return this;
+    }
+
+    @Override
+    public FeeCheckResponseExtensionItemStdV1 build() {
+      getInstance().command = commandBuilder.build();
+      return super.build();
+    }
+
+    @Override
+    public Builder setEffectiveDateIfSupported(DateTime effectiveDate) {
+      commandBuilder.setEffectiveDate(effectiveDate);
+      return this;
+    }
+
+    @Override
+    public Builder setNotAfterDateIfSupported(DateTime notAfterDate) {
+      commandBuilder.setNotAfterDate(notAfterDate);
+      return this;
+    }
+  }
+}

core/src/main/java/google/registry/model/domain/feestdv1/FeeCheckResponseExtensionStdV1.java

@@ -0,0 +1,59 @@
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.model.domain.feestdv1;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.collect.ImmutableList;
+import google.registry.model.ImmutableObject;
+import google.registry.model.domain.fee.FeeCheckResponseExtension;
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlRootElement;
+import jakarta.xml.bind.annotation.XmlType;
+import org.joda.money.CurrencyUnit;
+
+/**
+ * An XML data object that represents version 1.0 of the fee extension that may be present on the
+ * response to EPP domain check commands.
+ */
+@XmlRootElement(name = "chkData")
+@XmlType(propOrder = {"currency", "items"})
+public class FeeCheckResponseExtensionStdV1 extends ImmutableObject
+    implements FeeCheckResponseExtension<FeeCheckResponseExtensionItemStdV1> {
+
+  CurrencyUnit currency;
+
+  /** Check responses. */
+  @XmlElement(name = "cd")
+  ImmutableList<FeeCheckResponseExtensionItemStdV1> items;
+
+  @Override
+  public void setCurrencyIfSupported(CurrencyUnit currency) {
+    this.currency = currency;
+  }
+
+  @VisibleForTesting
+  @Override
+  public ImmutableList<FeeCheckResponseExtensionItemStdV1> getItems() {
+    return items;
+  }
+
+  static FeeCheckResponseExtensionStdV1 create(
+      CurrencyUnit currency, ImmutableList<FeeCheckResponseExtensionItemStdV1> items) {
+    FeeCheckResponseExtensionStdV1 instance = new FeeCheckResponseExtensionStdV1();
+    instance.currency = currency;
+    instance.items = items;
+    return instance;
+  }
+}

core/src/main/java/google/registry/model/domain/feestdv1/FeeCreateCommandExtensionStdV1.java

@@ -0,0 +1,45 @@
+// Copyright 2025 The Nomulus Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.model.domain.feestdv1;
+
+import static google.registry.util.CollectionUtils.nullToEmptyImmutableCopy;
+
+import com.google.common.collect.ImmutableList;
+import google.registry.model.domain.fee.Credit;
+import google.registry.model.domain.fee.FeeCreateCommandExtension;
+import google.registry.model.domain.fee.FeeTransformResponseExtension;
+import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlRootElement;
+import jakarta.xml.bind.annotation.XmlType;
+import java.util.List;
+
+/** A fee extension that may be present on domain create commands. */
+@XmlRootElement(name = "create")
+@XmlType(propOrder = {"currency", "fees", "credits"})
+public class FeeCreateCommandExtensionStdV1 extends FeeCreateCommandExtension {
+
+  @XmlElement(name = "credit")
+  List<Credit> credits;
+
+  @Override
+  public ImmutableList<Credit> getCredits() {
+    return nullToEmptyImmutableCopy(credits);
+  }
+
+  @Override
+  public FeeTransformResponseExtension.Builder createResponseBuilder() {
+    return new FeeTransformResponseExtension.Builder(new FeeCreateResponseExtensionStdV1());
+  }
+}