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s3-remote-cache-singleflight
seaweedfs/weed/s3api
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chrislu f98f347807 s3/filer: add singleflight deduplication for remote object caching 
- Add singleflight.Group to FilerServer to deduplicate concurrent cache operations
- Wrap CacheRemoteObjectToLocalCluster with singleflight to ensure only one
  caching operation runs per object when multiple clients request the same file
- Add early-return check for already-cached objects
- S3 API calls filer gRPC with timeout and graceful fallback on error
- Clear negative bucket cache when bucket is created via weed shell
- Add integration tests for remote cache with singleflight deduplication

This benefits all clients (S3, HTTP, Hadoop) accessing remote-mounted objects
by preventing redundant cache operations and improving concurrent access performance.

Fixes: https://github.com/seaweedfs/seaweedfs/discussions/7599
2025-12-16 11:39:02 -08:00
..
cors
fix: CORS wildcard subdomain matching cache race condition (#7736)
2025-12-13 14:33:46 -08:00
policy
fix
2024-10-03 09:03:17 -07:00
policy_engine
s3: add s3:ExistingObjectTag condition support for bucket policies (#7677)
2025-12-09 09:48:13 -08:00
s3_constants
fix: use path instead of filepath for S3 object paths on Windows (#7739)
2025-12-14 11:18:23 -08:00
s3_objectlock
fix: admin UI bucket deletion with filer group configured (#7735)
2025-12-13 19:04:12 -08:00
s3bucket
adjust fix
2025-02-01 14:11:57 -08:00
s3err
Filer, S3: Feature/add concurrent file upload limit (#7554)
2025-11-26 12:07:54 -08:00
AmazonS3.xsd
add s3test for sql (#5718)
2024-07-04 11:00:41 -07:00
auth_credentials_subscribe.go
s3/filer: add singleflight deduplication for remote object caching
2025-12-16 11:39:02 -08:00
auth_credentials_test.go
S3: Enforce bucket policy (#7471)
2025-11-12 22:14:50 -08:00
auth_credentials.go
feat(iam): add SetUserStatus and UpdateAccessKey actions (#7750)
2025-12-14 18:48:39 -08:00
auth_signature_v2_test.go
fix(s3api): fix AWS Signature V2 format and validation (#7488)
2025-11-26 12:24:02 -08:00
auth_signature_v2.go
fmt
2025-11-27 22:44:35 -08:00
auth_signature_v4_test.go
Fix IPv6 host header formatting to match AWS SDK behavior (#7414)
2025-10-30 21:06:00 -07:00
auth_signature_v4.go
s3: support STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER for signed chunked uploads with checksums (#7623)
2025-12-04 14:51:37 -08:00
auto_signature_v4_test.go
feat(iam): add SetUserStatus and UpdateAccessKey actions (#7750)
2025-12-14 18:48:39 -08:00
bucket_metadata_test.go
[s3acl] Step1: move s3account.AccountManager into to iam.S3ApiConfiguration (#4859)
2023-09-25 08:34:12 -07:00
bucket_metadata.go
s3/filer: add singleflight deduplication for remote object caching
2025-12-16 11:39:02 -08:00
bucket_size_metrics.go
feat: add S3 bucket size and object count metrics (#7776)
2025-12-15 19:23:25 -08:00
chunked_bug_reproduction_test.go
S3 API: unsigned streaming (no cred) but chunks contain signatures (#7118)
2025-08-11 10:31:01 -07:00
chunked_reader_v4_test.go
s3: support STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER for signed chunked uploads with checksums (#7623)
2025-12-04 14:51:37 -08:00
chunked_reader_v4.go
s3: support STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER for signed chunked uploads with checksums (#7623)
2025-12-04 14:51:37 -08:00
custom_types.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
filer_multipart_test.go
fix: use path instead of filepath for S3 object paths on Windows (#7739)
2025-12-14 11:18:23 -08:00
filer_multipart.go
fix: use path instead of filepath for S3 object paths on Windows (#7739)
2025-12-14 11:18:23 -08:00
filer_util_tags.go
added context to filer_client method calls (#6808)
2025-05-22 09:46:49 -07:00
filer_util.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
object_lock_utils.go
fix: admin UI bucket delete now properly deletes collection and checks Object Lock (#7734)
2025-12-13 13:41:25 -08:00
policy_conversion_test.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
policy_conversion.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
README.txt
add s3test for sql (#5718)
2024-07-04 11:00:41 -07:00
s3_action_resolver.go
S3: add context aware action resolution (#7479)
2025-11-13 16:10:46 -08:00
s3_bucket_encryption.go
fix: CORS wildcard subdomain matching cache race condition (#7736)
2025-12-13 14:33:46 -08:00
s3_end_to_end_test.go
s3: enable auth when IAM integration is configured (#7726)
2025-12-12 13:37:31 -08:00
s3_error_utils.go
S3 API: Add SSE-S3 (#7151)
2025-08-22 01:15:42 -07:00
s3_existing_object_tag_test.go
s3: add s3:ExistingObjectTag condition support for bucket policies (#7677)
2025-12-09 09:48:13 -08:00
s3_granular_action_security_test.go
S3: add context aware action resolution (#7479)
2025-11-13 16:10:46 -08:00
s3_iam_middleware.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3_iam_role_selection_test.go
S3 API: Advanced IAM System (#7160)
2025-08-30 11:15:48 -07:00
s3_iam_simple_test.go
S3: add context aware action resolution (#7479)
2025-11-13 16:10:46 -08:00
s3_jwt_auth_test.go
S3: Enforce bucket policy (#7471)
2025-11-12 22:14:50 -08:00
s3_list_parts_action_test.go
S3: add context aware action resolution (#7479)
2025-11-13 16:10:46 -08:00
s3_metadata_util.go
S3: set identity to request context, and remove obsolete code (#7523)
2025-11-21 14:46:32 -08:00
s3_multipart_iam_test.go
S3: add context aware action resolution (#7479)
2025-11-13 16:10:46 -08:00
s3_multipart_iam.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3_policy_templates_test.go
S3: Enforce bucket policy (#7471)
2025-11-12 22:14:50 -08:00
s3_policy_templates.go
S3: Enforce bucket policy (#7471)
2025-11-12 22:14:50 -08:00
s3_presigned_url_iam_test.go
S3: Enforce bucket policy (#7471)
2025-11-12 22:14:50 -08:00
s3_presigned_url_iam.go
S3: Enforce bucket policy (#7471)
2025-11-12 22:14:50 -08:00
s3_sse_bucket_test.go
S3 API: Add SSE-KMS (#7144)
2025-08-21 08:28:07 -07:00
s3_sse_c_range_test.go
S3 API: Fix SSE-S3 decryption on object download (#7366)
2025-10-23 20:10:12 -07:00
s3_sse_c_test.go
S3 API: Add SSE-KMS (#7144)
2025-08-21 08:28:07 -07:00
s3_sse_c.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3_sse_copy_test.go
S3 API: Fix SSE-S3 decryption on object download (#7366)
2025-10-23 20:10:12 -07:00
s3_sse_ctr_test.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3_sse_error_test.go
S3 API: Add SSE-S3 (#7151)
2025-08-22 01:15:42 -07:00
s3_sse_http_test.go
S3 API: Add SSE-KMS (#7144)
2025-08-21 08:28:07 -07:00
s3_sse_kms_test.go
S3 API: Add SSE-KMS (#7144)
2025-08-21 08:28:07 -07:00
s3_sse_kms_utils.go
S3 API: Add SSE-S3 (#7151)
2025-08-22 01:15:42 -07:00
s3_sse_kms.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3_sse_metadata_test.go
S3 API: Add SSE-KMS (#7144)
2025-08-21 08:28:07 -07:00
s3_sse_metadata.go
S3 API: Fix SSE-S3 decryption on object download (#7366)
2025-10-23 20:10:12 -07:00
s3_sse_multipart_test.go
Migrate from deprecated azure-storage-blob-go to modern Azure SDK (#7310)
2025-10-08 23:12:03 -07:00
s3_sse_s3_integration_test.go
go fmt
2025-10-27 23:04:55 -07:00
s3_sse_s3_multipart_test.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3_sse_s3_test.go
fix: copy to bucket with default SSE-S3 encryption fails (#7562) (#7568)
2025-11-28 13:28:17 -08:00
s3_sse_s3.go
fix: copy to bucket with default SSE-S3 encryption fails (#7562) (#7568)
2025-11-28 13:28:17 -08:00
s3_sse_test_utils_test.go
S3 API: Fix SSE-S3 decryption on object download (#7366)
2025-10-23 20:10:12 -07:00
s3_sse_utils.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3_token_differentiation_test.go
S3 API: Advanced IAM System (#7160)
2025-08-30 11:15:48 -07:00
s3_validation_utils.go
go fmt
2025-10-27 23:04:55 -07:00
s3api_acl_helper_test.go
[s3acl] Step1: move s3account.AccountManager into to iam.S3ApiConfiguration (#4859)
2023-09-25 08:34:12 -07:00
s3api_acl_helper.go
Add Kafka Gateway (#7231)
2025-10-13 18:05:17 -07:00
s3api_acp.go
[s3acl] Step1: move s3account.AccountManager into to iam.S3ApiConfiguration (#4859)
2023-09-25 08:34:12 -07:00
s3api_auth.go
s3: support STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER for signed chunked uploads with checksums (#7623)
2025-12-04 14:51:37 -08:00
s3api_bucket_config.go
fix: CORS wildcard subdomain matching cache race condition (#7736)
2025-12-13 14:33:46 -08:00
s3api_bucket_cors_handlers.go
S3: add fallback for CORS (#7404)
2025-10-29 13:43:27 -07:00
s3api_bucket_handlers_object_lock_config.go
S3: S3 Object Retention API to include XML namespace support (#7517)
2025-11-20 11:42:22 -08:00
s3api_bucket_handlers_test.go
feat(iam): add SetUserStatus and UpdateAccessKey actions (#7750)
2025-12-14 18:48:39 -08:00
s3api_bucket_handlers.go
fix: admin UI bucket delete now properly deletes collection and checks Object Lock (#7734)
2025-12-13 13:41:25 -08:00
s3api_bucket_metadata_test.go
S3 API: Add SSE-KMS (#7144)
2025-08-21 08:28:07 -07:00
s3api_bucket_policy_arn_test.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3api_bucket_policy_engine.go
s3: add s3:ExistingObjectTag condition support for bucket policies (#7677)
2025-12-09 09:48:13 -08:00
s3api_bucket_policy_handlers.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3api_bucket_tagging_handlers.go
S3 API: Add SSE-KMS (#7144)
2025-08-21 08:28:07 -07:00
s3api_circuit_breaker_test.go
move to https://github.com/seaweedfs/seaweedfs
2022-07-29 00:17:28 -07:00
s3api_circuit_breaker.go
Metrics: Add Prometheus metrics for concurrent upload tracking (#7555)
2025-11-26 15:51:38 -08:00
s3api_conditional_headers_test.go
s3: fix if-match error (#7277)
2025-10-29 12:27:25 -07:00
s3api_copy_size_calculation.go
S3 API: Add SSE-S3 (#7151)
2025-08-22 01:15:42 -07:00
s3api_copy_validation.go
S3 API: Add SSE-KMS (#7144)
2025-08-21 08:28:07 -07:00
s3api_domain_test.go
fix: Use a mixed of virtual and path styles within a single subdomain (#7357)
2025-10-24 01:45:22 -07:00
s3api_embedded_iam_test.go
feat(iam): add SetUserStatus and UpdateAccessKey actions (#7750)
2025-12-14 18:48:39 -08:00
s3api_embedded_iam.go
feat(iam): add SetUserStatus and UpdateAccessKey actions (#7750)
2025-12-14 18:48:39 -08:00
s3api_encrypted_volume_copy_test.go
S3: Fix encrypted file copy with multiple chunks (#7530) (#7546)
2025-11-25 09:56:20 -08:00
s3api_governance_permissions_test.go
Add policy engine (#6970)
2025-07-13 16:21:36 -07:00
s3api_handlers.go
Support multiple filers for S3 and IAM servers with automatic failover (#7550)
2025-11-26 11:29:55 -08:00
s3api_implicit_directory_test.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3api_key_rotation.go
S3: Fix encrypted file copy with multiple chunks (#7530) (#7546)
2025-11-25 09:56:20 -08:00
s3api_object_handlers_acl.go
S3: Perf related (#7463)
2025-11-10 20:30:21 -08:00
s3api_object_handlers_copy_test.go
fix: copy to bucket with default SSE-S3 encryption fails (#7562) (#7568)
2025-11-28 13:28:17 -08:00
s3api_object_handlers_copy_unified.go
Fix SSE-S3 copy: preserve encryption metadata and set chunk SSE type (#7598)
2025-12-02 09:24:31 -08:00
s3api_object_handlers_copy.go
Add TUS protocol support for resumable uploads (#7592)
2025-12-14 21:56:07 -08:00
s3api_object_handlers_delete.go
s3: optimize DELETE by skipping lock check for buckets without Object Lock (#7642)
2025-12-06 21:37:25 -08:00
s3api_object_handlers_legal_hold.go
refactor (#6999)
2025-07-19 00:49:56 -07:00
s3api_object_handlers_list_test.go
address List permission
2025-07-28 02:39:41 -07:00
s3api_object_handlers_list.go
fix: prevent path doubling in versioned object listing (#7729)
2025-12-12 23:21:51 -08:00
s3api_object_handlers_multipart.go
Support multiple filers for S3 and IAM servers with automatic failover (#7550)
2025-11-26 11:29:55 -08:00
s3api_object_handlers_postpolicy_test.go
s3: fix presigned POST upload missing slash between bucket and key (#7714)
2025-12-10 23:42:58 -08:00
s3api_object_handlers_postpolicy.go
s3: fix presigned POST upload missing slash between bucket and key (#7714)
2025-12-10 23:42:58 -08:00
s3api_object_handlers_put_test.go
check errors
2025-11-21 14:48:41 -08:00
s3api_object_handlers_put.go
s3: fix PutObject ETag format for multi-chunk uploads (#7771)
2025-12-15 12:43:33 -08:00
s3api_object_handlers_retention.go
refactor (#6999)
2025-07-19 00:49:56 -07:00
s3api_object_handlers_tagging.go
rename files
2024-04-29 05:33:56 -07:00
s3api_object_handlers_test.go
Support multiple filers for S3 and IAM servers with automatic failover (#7550)
2025-11-26 11:29:55 -08:00
s3api_object_handlers.go
s3/filer: add singleflight deduplication for remote object caching
2025-12-16 11:39:02 -08:00
s3api_object_lock_fix_test.go
Fix get object lock configuration handler (#6996)
2025-07-18 02:19:50 -07:00
s3api_object_lock_headers_test.go
Test object lock and retention (#6997)
2025-07-18 22:25:58 -07:00
s3api_object_retention_test.go
S3: S3 Object Retention API to include XML namespace support (#7517)
2025-11-20 11:42:22 -08:00
s3api_object_retention.go
s3: optimize DELETE by skipping lock check for buckets without Object Lock (#7642)
2025-12-06 21:37:25 -08:00
s3api_object_versioning.go
s3: reduce ObjectVersion memory by not retaining full Entry (#7786)
2025-12-16 09:53:29 -08:00
s3api_policy.go
[s3] Put bucket lifecycle configuration (#5510)
2024-04-27 07:39:22 -07:00
s3api_put_handlers.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3api_put_object_helper_test.go
Add credential storage (#6938)
2025-07-02 18:03:17 -07:00
s3api_put_object_helper.go
s3api: remove redundant auth verification in getRequestDataReader (#7685)
2025-12-09 10:24:35 -08:00
s3api_server_grpc.go
move to https://github.com/seaweedfs/seaweedfs
2022-07-29 00:17:28 -07:00
s3api_server.go
s3/filer: add singleflight deduplication for remote object caching
2025-12-16 11:39:02 -08:00
s3api_sse_chunk_metadata_test.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3api_sse_decrypt_test.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3api_sse_s3_upload_test.go
S3: Directly read write volume servers (#7481)
2025-11-18 23:18:35 -08:00
s3api_status_handlers.go
move to https://github.com/seaweedfs/seaweedfs
2022-07-29 00:17:28 -07:00
s3api_streaming_copy.go
Fix SSE-S3 copy: preserve encryption metadata and set chunk SSE type (#7598)
2025-12-02 09:24:31 -08:00
s3api_test.go
move to https://github.com/seaweedfs/seaweedfs
2022-07-29 00:17:28 -07:00
s3api_xsd_generated_helper.go
add s3test for sql (#5718)
2024-07-04 11:00:41 -07:00
s3api_xsd_generated.go
fix ListAllMyBucketsResult xmlns
2025-08-14 20:38:03 -07:00
stats.go
Populate bucket_traffic_received_bytes_total metric (#7249)
2025-09-17 19:04:51 -07:00
tags_test.go
tag parsing decode url encoded
2025-07-28 02:49:43 -07:00
tags.go
tag parsing decode url encoded
2025-07-28 02:49:43 -07:00

README.txt 

see https://blog.aqwari.net/xml-schema-go/

1. go get aqwari.net/xml/cmd/xsdgen
2. Add EncodingType element for ListBucketResult in AmazonS3.xsd
3. xsdgen -o s3api_xsd_generated.go -pkg s3api AmazonS3.xsd
4. Remove empty Grantee struct in s3api_xsd_generated.go
5. Remove xmlns: sed s'/http:\/\/s3.amazonaws.com\/doc\/2006-03-01\/\ //' s3api_xsd_generated.go
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