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<section id="system-requirements">
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<h1>System Requirements<a class="headerlink" href="#system-requirements" title="Link to this heading">¶</a></h1>
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<section id="supported-platforms">
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<span id="system-requirements-supported-platforms"></span><h2>Supported Platforms<a class="headerlink" href="#supported-platforms" title="Link to this heading">¶</a></h2>
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<p>ScyllaDB runs on 64-bit Linux. The x86_64 and AArch64 architectures are supported (AArch64 support includes AWS EC2 Graviton).</p>
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supported operating systems, distros, and versions.</p>
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about instance types recommended for cloud deployments.</p>
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<section id="hardware-requirements">
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<span id="system-requirements-hardware"></span><h2>Hardware Requirements<a class="headerlink" href="#hardware-requirements" title="Link to this heading">¶</a></h2>
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<p>It’s recommended to have a balanced setup. If there are only 4-8 <a class="reference internal" href="../reference/glossary.html#term-Logical-Core-lcore"><span class="xref std std-term">Logical Cores</span></a>, large disks or 10Gbps networking may not be needed.
|
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This works in the opposite direction as well.
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ScyllaDB can be used in many types of installation environments.</p>
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<p>To see which system would best suit your workload requirements, use the <a class="reference external" href="https://www.scylladb.com/product/scylla-cloud/get-pricing/">ScyllaDB Sizing Calculator</a> to customize ScyllaDB for your usage.</p>
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<section id="core-requirements">
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<h3>Core Requirements<a class="headerlink" href="#core-requirements" title="Link to this heading">¶</a></h3>
|
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<p>ScyllaDB tries to maximize the resource usage of all system components. The shard-per-core approach allows linear scale-up with the number of cores. As you have more cores, it makes sense to balance the other resources, from memory to network.</p>
|
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<section id="cpu">
|
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<h4>CPU<a class="headerlink" href="#cpu" title="Link to this heading">¶</a></h4>
|
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<p>ScyllaDB requires modern Intel/AMD CPUs that support the SSE4.2 instruction set and will not boot without it.</p>
|
||
<p>ScyllaDB supports the following CPUs:</p>
|
||
<ul class="simple">
|
||
<li><p>Intel core: Westmere and later (2010)</p></li>
|
||
<li><p>Intel atom: Goldmont and later (2016)</p></li>
|
||
<li><p>AMD low power: Jaguar and later (2013)</p></li>
|
||
<li><p>AMD standard: Bulldozer and later (2011)</p></li>
|
||
<li><p>Apple M1 and M2</p></li>
|
||
<li><p>Ampere Altra</p></li>
|
||
<li><p>AWS Graviton, Graviton2, Graviton3</p></li>
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<p>In terms of the number of cores, any number will work since ScyllaDB scales up with the number of cores.
|
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A practical approach is to use a large number of cores as long as the hardware price remains reasonable.
|
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Between 20-60 logical cores (including hyperthreading) is a recommended number. However, any number will fit.
|
||
When using virtual machines, containers, or the public cloud, remember that each virtual CPU is mapped to a single logical core, or thread.
|
||
Allow ScyllaDB to run independently without any additional CPU intensive tasks on the same server/cores as ScyllaDB.</p>
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</section>
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</section>
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<section id="memory-requirements">
|
||
<span id="system-requirements-memory"></span><h3>Memory Requirements<a class="headerlink" href="#memory-requirements" title="Link to this heading">¶</a></h3>
|
||
<p>The more memory available, the better ScyllaDB performs, as ScyllaDB uses all of the available memory for caching. The wider the rows are in the schema, the more memory will be required. 64 GB-256 GB is the recommended range for a medium to high workload. Memory requirements are calculated based on the number of <abbr title="logical cores">lcores</abbr> you are using in your system.</p>
|
||
<ul class="simple">
|
||
<li><p>Recommended size: 16 GB or 2GB per lcore (whichever is higher)</p></li>
|
||
<li><p>Maximum: 1 TiB per lcore, up to 256 lcores</p></li>
|
||
<li><p>Minimum:</p>
|
||
<ul>
|
||
<li><p>For test environments: 1 GB or 256 MiB per lcore (whichever is higher)</p></li>
|
||
<li><p>For production environments: 4 GB or 0.5 GB per lcore (whichever is higher)</p></li>
|
||
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</section>
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<section id="disk-requirements">
|
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<span id="system-requirements-disk"></span><h3>Disk Requirements<a class="headerlink" href="#disk-requirements" title="Link to this heading">¶</a></h3>
|
||
<section id="ssd">
|
||
<h4>SSD<a class="headerlink" href="#ssd" title="Link to this heading">¶</a></h4>
|
||
<p>We highly recommend SSD and local disks. ScyllaDB is built for a large volume of data and large storage per node.
|
||
You can use up to 100:1 Disk/RAM ratio, with 30:1 Disk/RAM ratio as a good rule of thumb; for example, 30 TB of storage requires 1 TB of RAM.
|
||
We recommend a RAID-0 setup and a replication factor of 3 within the local datacenter (RF=3) when there are multiple drives.</p>
|
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</section>
|
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<section id="hdd">
|
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<h4>HDD<a class="headerlink" href="#hdd" title="Link to this heading">¶</a></h4>
|
||
<p>HDDs are supported but may become a bottleneck. Some workloads may work with HDDs, especially if they play nice and minimize random seeks. An example of an HDD-friendly workload is a write-mostly (98% writes) workload, with minimal random reads. If you use HDDs, try to allocate a separate disk for the commit log (not needed with SSDs).</p>
|
||
</section>
|
||
<section id="disk-space">
|
||
<h4>Disk Space<a class="headerlink" href="#disk-space" title="Link to this heading">¶</a></h4>
|
||
<p>ScyllaDB is flushing memtables to SSTable data files for persistent storage. SSTables are periodically compacted to improve performance by merging and rewriting data and discarding the old one. Depending on compaction strategy, disk space utilization temporarily increases during compaction. For this reason, you should leave an adequate amount of free disk space available on a node.
|
||
Use the following table as a guidelines for the minimum disk space requirements based on the compaction strategy:</p>
|
||
<table class="docutils align-default">
|
||
<thead>
|
||
<tr class="row-odd"><th class="head"><p>Compaction Strategy</p></th>
|
||
<th class="head"><p>Recommended</p></th>
|
||
<th class="head"><p>Minimum</p></th>
|
||
</tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr class="row-even"><td><p>Size Tiered Compaction Strategy (STCS)</p></td>
|
||
<td><p>50%</p></td>
|
||
<td><p>70%</p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p>Leveled Compaction Strategy (LCS)</p></td>
|
||
<td><p>50%</p></td>
|
||
<td><p>80%</p></td>
|
||
</tr>
|
||
<tr class="row-even"><td><p>Time-window Compaction Strategy (TWCS)</p></td>
|
||
<td><p>50%</p></td>
|
||
<td><p>70%</p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p>Incremental Compaction Strategy (ICS)</p></td>
|
||
<td><p>70%</p></td>
|
||
<td><p>80%</p></td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<p>Use the default ICS unless you’ll have a clear understanding that another strategy is better for your use case. More on <a class="reference internal" href="../architecture/compaction/compaction-strategies.html"><span class="doc">choosing a Compaction Strategy</span></a>.
|
||
In order to maintain a high level of service availability, keep 50% to 20% free disk space at all times!</p>
|
||
</section>
|
||
</section>
|
||
</section>
|
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<section id="network-requirements">
|
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<span id="system-requirements-network"></span><h2>Network Requirements<a class="headerlink" href="#network-requirements" title="Link to this heading">¶</a></h2>
|
||
<p>A network speed of 10 Gbps or more is recommended, especially for large nodes. To tune the interrupts and their queues, run the ScyllaDB setup scripts.</p>
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</section>
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<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/create-superuser.html">Creating a Custom Superuser</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/gen-cqlsh-file.html">Generate a cqlshrc File</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/password-reset.html">Reset Authenticator Password</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/enable-authorization.html">Enable Authorization</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/authorization.html">Grant Authorization CQL Reference</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/certificate-authentication.html">Certificate-based Authentication</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/rbac-usecase.html">Role Based Access Control (RBAC)</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/client-node-encryption.html">Encryption: Data in Transit Client to Node</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/node-node-encryption.html">Encryption: Data in Transit Node to Node</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/generate-certificate.html">Generating a self-signed Certificate Chain Using openssl</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/security/saslauthd.html">Configure SaslauthdAuthenticator</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../operating-scylla/admin-tools/index.html">Admin Tools</a><input class="toctree-checkbox" id="toctree-checkbox-9" name="toctree-checkbox-9" type="checkbox"/><label for="toctree-checkbox-9"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/nodetool.html">Nodetool Reference</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../cql/cqlsh.html">CQLSh</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/rest.html">Admin REST API</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../using-scylla/tracing.html">Tracing</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/scylla-sstable.html">ScyllaDB SStable</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/scylla-types.html">ScyllaDB Types</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/sstableloader.html">SSTableLoader</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/cassandra-stress.html">cassandra-stress</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/sstabledump.html">SSTabledump</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/sstablemetadata.html">SSTableMetadata</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="logging.html">ScyllaDB Logs</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/perftune.html">Seastar Perftune</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/virtual-tables.html">Virtual Tables</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/select-from-mutation-fragments.html">Reading mutation fragments</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/maintenance-socket.html">Maintenance socket</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/maintenance-mode.html">Maintenance mode</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin-tools/task-manager.html">Task manager</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference external" href="https://monitoring.docs.scylladb.com/">ScyllaDB Monitoring Stack</a></li>
|
||
<li class="toctree-l2"><a class="reference external" href="https://operator.docs.scylladb.com/">ScyllaDB Operator</a></li>
|
||
<li class="toctree-l2"><a class="reference external" href="https://manager.docs.scylladb.com/">ScyllaDB Manager</a></li>
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||
<li class="toctree-l2 has-children"><a class="reference internal" href="../upgrade/index.html">Upgrade Procedures</a><input class="toctree-checkbox" id="toctree-checkbox-10" name="toctree-checkbox-10" type="checkbox"/><label for="toctree-checkbox-10"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l3"><a class="reference internal" href="../upgrade/scylladb-versioning.html">ScyllaDB Versioning</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../upgrade/upgrade-opensource/index.html">ScyllaDB Open Source Upgrade</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../upgrade/upgrade-to-enterprise/index.html">ScyllaDB Open Source to ScyllaDB Enterprise Upgrade</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../upgrade/ami-upgrade.html">ScyllaDB Image</a></li>
|
||
<li class="toctree-l3"><a class="reference external" href="https://enterprise.docs.scylladb.com/stable/upgrade/upgrade-enterprise/index.html">ScyllaDB Enterprise</a></li>
|
||
</ul>
|
||
</li>
|
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<li class="toctree-l2 has-children"><a class="reference internal" href="../operating-scylla/system-configuration/index.html">System Configuration</a><input class="toctree-checkbox" id="toctree-checkbox-11" name="toctree-checkbox-11" type="checkbox"/><label for="toctree-checkbox-11"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l3"><a class="reference internal" href="system-configuration.html">System Configuration Guide</a></li>
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||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/admin.html">scylla.yaml</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/system-configuration/snitch.html">ScyllaDB Snitches</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../operating-scylla/benchmarking-scylla.html">Benchmarking ScyllaDB</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../operating-scylla/diagnostics.html">ScyllaDB Diagnostic Tools</a></li>
|
||
</ul>
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||
</li>
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<li class="toctree-l1 has-children"><a class="reference internal" href="../using-scylla/index.html">ScyllaDB for Developers</a><input class="toctree-checkbox" id="toctree-checkbox-12" name="toctree-checkbox-12" type="checkbox"/><label for="toctree-checkbox-12"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l2"><a class="reference external" href="https://docs.scylladb.com/stable/get-started/develop-with-scylladb/index.html">Develop with ScyllaDB</a></li>
|
||
<li class="toctree-l2"><a class="reference external" href="https://docs.scylladb.com/stable/get-started/develop-with-scylladb/tutorials-example-projects.html">Tutorials and Example Projects</a></li>
|
||
<li class="toctree-l2"><a class="reference external" href="https://docs.scylladb.com/stable/get-started/learn-resources/index.html">Learn to Use ScyllaDB</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../using-scylla/alternator/index.html">ScyllaDB Alternator</a></li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../using-scylla/drivers/index.html">ScyllaDB Drivers</a><input class="toctree-checkbox" id="toctree-checkbox-13" name="toctree-checkbox-13" type="checkbox"/><label for="toctree-checkbox-13"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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||
<li class="toctree-l3"><a class="reference internal" href="../using-scylla/drivers/cql-drivers/index.html">ScyllaDB CQL Drivers</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../using-scylla/drivers/dynamo-drivers/index.html">ScyllaDB DynamoDB Drivers</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../cql/index.html">CQL Reference</a><input class="toctree-checkbox" id="toctree-checkbox-14" name="toctree-checkbox-14" type="checkbox"/><label for="toctree-checkbox-14"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l2"><a class="reference internal" href="../cql/cqlsh.html">CQLSh: the CQL shell</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/appendices.html">Appendices</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/compaction.html">Compaction</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/consistency.html">Consistency Levels</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/consistency-calculator.html">Consistency Level Calculator</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/ddl.html">Data Definition</a></li>
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<li class="toctree-l2 has-children"><a class="reference internal" href="../cql/dml.html">Data Manipulation</a><input class="toctree-checkbox" id="toctree-checkbox-15" name="toctree-checkbox-15" type="checkbox"/><label for="toctree-checkbox-15"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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||
<li class="toctree-l3"><a class="reference internal" href="../cql/dml/select.html">SELECT</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../cql/dml/insert.html">INSERT</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../cql/dml/update.html">UPDATE</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../cql/dml/delete.html">DELETE</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../cql/dml/batch.html">BATCH</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/types.html">Data Types</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/definitions.html">Definitions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/secondary-indexes.html">Global Secondary Indexes</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/time-to-live.html">Expiring Data with Time to Live (TTL)</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/functions.html">Functions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/wasm.html">Wasm support for user-defined functions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/json.html">JSON Support</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/mv.html">Materialized Views</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/non-reserved-keywords.html">Non-Reserved CQL Keywords</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/reserved-keywords.html">Reserved CQL Keywords</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/service-levels.html">Service Levels</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../cql/cql-extensions.html">ScyllaDB CQL Extensions</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../alternator/alternator.html">Alternator: DynamoDB API in Scylla</a><input class="toctree-checkbox" id="toctree-checkbox-16" name="toctree-checkbox-16" type="checkbox"/><label for="toctree-checkbox-16"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l2"><a class="reference internal" href="../alternator/getting-started.html">Getting Started With ScyllaDB Alternator</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../alternator/compatibility.html">ScyllaDB Alternator for DynamoDB users</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../features/index.html">Features</a><input class="toctree-checkbox" id="toctree-checkbox-17" name="toctree-checkbox-17" type="checkbox"/><label for="toctree-checkbox-17"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l2"><a class="reference internal" href="../features/lwt.html">Lightweight Transactions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../features/secondary-indexes.html">Global Secondary Indexes</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../features/local-secondary-indexes.html">Local Secondary Indexes</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../features/materialized-views.html">Materialized Views</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../features/counters.html">Counters</a></li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../features/cdc/index.html">Change Data Capture</a><input class="toctree-checkbox" id="toctree-checkbox-18" name="toctree-checkbox-18" type="checkbox"/><label for="toctree-checkbox-18"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-intro.html">CDC Overview</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-log-table.html">The CDC Log Table</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-basic-operations.html">Basic operations in CDC</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-streams.html">CDC Streams</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-stream-generations.html">CDC Stream Generations</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-querying-streams.html">Querying CDC Streams</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-advanced-types.html">Advanced column types</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-preimages.html">Preimages and postimages</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../features/cdc/cdc-consistency.html">Data Consistency in CDC</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../features/workload-attributes.html">Workload Attributes</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../architecture/index.html">ScyllaDB Architecture</a><input class="toctree-checkbox" id="toctree-checkbox-19" name="toctree-checkbox-19" type="checkbox"/><label for="toctree-checkbox-19"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l2"><a class="reference internal" href="../architecture/tablets.html">Data Distribution with Tablets</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/ringarchitecture/index.html">ScyllaDB Ring Architecture</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/architecture-fault-tolerance.html">ScyllaDB Fault Tolerance</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/console-CL-full-demo.html">Consistency Level Console Demo</a></li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../architecture/anti-entropy/index.html">ScyllaDB Anti-Entropy</a><input class="toctree-checkbox" id="toctree-checkbox-20" name="toctree-checkbox-20" type="checkbox"/><label for="toctree-checkbox-20"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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||
<li class="toctree-l3"><a class="reference internal" href="../architecture/anti-entropy/hinted-handoff.html">ScyllaDB Hinted Handoff</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../architecture/anti-entropy/read-repair.html">ScyllaDB Read Repair</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../operating-scylla/procedures/maintenance/repair.html">ScyllaDB Repair</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../architecture/sstable/index.html">SSTable</a><input class="toctree-checkbox" id="toctree-checkbox-21" name="toctree-checkbox-21" type="checkbox"/><label for="toctree-checkbox-21"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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||
<li class="toctree-l3"><a class="reference internal" href="../architecture/sstable/sstable2/index.html">ScyllaDB SSTable - 2.x</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../architecture/sstable/sstable3/index.html">ScyllaDB SSTable - 3.x</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/compaction/compaction-strategies.html">Compaction Strategies</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/raft.html">Raft Consensus Algorithm in ScyllaDB</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/zero-token-nodes.html">Zero-token Nodes</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../troubleshooting/index.html">Troubleshooting ScyllaDB</a><input class="toctree-checkbox" id="toctree-checkbox-22" name="toctree-checkbox-22" type="checkbox"/><label for="toctree-checkbox-22"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l2 has-children"><a class="reference internal" href="../troubleshooting/support/index.html">Errors and Support</a><input class="toctree-checkbox" id="toctree-checkbox-23" name="toctree-checkbox-23" type="checkbox"/><label for="toctree-checkbox-23"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/report-scylla-problem.html">Report a ScyllaDB problem</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/error-messages/index.html">Error Messages</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/log-level.html">Change Log Level</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../troubleshooting/startup/index.html">ScyllaDB Startup</a><input class="toctree-checkbox" id="toctree-checkbox-24" name="toctree-checkbox-24" type="checkbox"/><label for="toctree-checkbox-24"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/change-ownership.html">Ownership Problems</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/scylla-wont-start.html">ScyllaDB will not Start</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/python-error-no-module-named-yaml.html">ScyllaDB Python Script broken</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../troubleshooting/upgrade/index.html">Upgrade</a><input class="toctree-checkbox" id="toctree-checkbox-25" name="toctree-checkbox-25" type="checkbox"/><label for="toctree-checkbox-25"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/missing-dotmount-files.html">Inaccessible configuration files after ScyllaDB upgrade</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../troubleshooting/cluster/index.html">Cluster and Node</a><input class="toctree-checkbox" id="toctree-checkbox-26" name="toctree-checkbox-26" type="checkbox"/><label for="toctree-checkbox-26"><i class="icon-chevron-right"></i></label><div class="break"></div><ul>
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||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/handling-node-failures.html">Handling Node Failures</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/failed-add-remove-replace.html">Failure to Add, Remove, or Replace a Node</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/failed-decommission.html">Failed Decommission Problem</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/timeouts.html">Cluster Timeouts</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/node-joined-without-any-data.html">Node Joined With No Data</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../troubleshooting/nodetool-nullpointerexception.html">NullPointerException</a></li>
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