# cassandra | The Apache Software Foundation | Knowledge Base | Instagit

Open source transactional distributed database. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure without compromising performance.

GitHub Stars: 10k

Repository: https://github.com/apache/cassandra

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## Articles

### [Common Cassandra Performance Issues and Diagnostic Approaches: A Complete Troubleshooting Guide](/apache/cassandra/common-cassandra-performance-issues-diagnostic-approaches)

Troubleshoot common Cassandra performance issues like high write latency and read spikes. Learn diagnostic approaches including nodetool metrics and configuration analysis.

- Tags: how-to-guide
- Published: 2026-07-29

### [How to Use Full Query Logging (FQL) for Debugging and Replay in Apache Cassandra](/apache/cassandra/how-to-use-full-query-logging-fql)

Learn how to use Cassandra Full Query Logging FQL to capture CQL statements bind values and metadata for debugging and load testing. Inspect and replay queries with fqltool.

- Tags: how-to-guide
- Published: 2026-07-29

### [How to Handle Node Decommissioning with transfer_hints_on_decommission in Apache Cassandra](/apache/cassandra/how-to-handle-node-decommissioning-transfer_hints_on_decommission)

Learn to handle Node Decommissioning in Apache Cassandra with transfer_hints_on_decommission. Optimize data durability vs decommission speed.

- Tags: how-to-guide
- Published: 2026-07-29

### [How to Use Storage-Attached Indexes (SAI) for Faster Queries in Apache Cassandra](/apache/cassandra/how-to-use-storage-attached-index-sai)

Learn how to use Storage-Attached Indexes SAI in Apache Cassandra for faster queries. Boost performance for equality, range, full-text, and vector similarity searches.

- Tags: how-to-guide
- Published: 2026-07-29

### [How to Configure NetworkTopologyStrategy for Multi-Datacenter Replication in Apache Cassandra](/apache/cassandra/how-to-configure-networktopologystrategy-multi-datacenter)

Configure NetworkTopologyStrategy for multi-datacenter replication in Apache Cassandra. Specify independent replication factors for each data center, ensuring rack aware replica placement.

- Tags: how-to-guide
- Published: 2026-07-29

### [How to Use Cassandra SSTable Utilities: sstableloader, sstableverify, and sstablescrub](/apache/cassandra/how-to-use-sstable-utilities)

Master Cassandra SSTable utilities sstableloader sstableverify and sstablescrub for efficient data loading integrity checks and corruption repair directly on immutable storage files.

- Tags: how-to-guide
- Published: 2026-07-29

### [How to Configure Vnodes (num_tokens) for Optimal Cassandra Cluster Balance](/apache/cassandra/how-to-configure-vnodes-for-cluster-balance)

Optimize Cassandra cluster balance by configuring vnodes (num_tokens). Learn how to set num_tokens for homogeneous and heterogeneous clusters to ensure efficient token distribution.

- Tags: how-to-guide
- Published: 2026-07-29

### [Cassandra Compaction Strategies: STCS, LCS, TWCS, and UCS Performance Guide](/apache/cassandra/cassandra-compaction-strategies-performance-implications)

Master Cassandra compaction strategies STCS LCS TWCS and UCS. Understand write read amplification tradeoffs for optimal performance in your Cassandra database.

- Tags: performance
- Published: 2026-07-29

### [How to Configure Authentication with PasswordAuthenticator and MutualTlsAuthenticator in Cassandra](/apache/cassandra/how-to-configure-authentication-passwordauthenticator-mutualtlsauthenticator)

Learn to configure Cassandra authentication using PasswordAuthenticator and MutualTlsAuthenticator. Secure your database with username/password or client certificate validation.

- Tags: how-to-guide
- Published: 2026-07-29

### [batchlog_endpoint_strategy Options in Cassandra: Complete Guide with Use Cases](/apache/cassandra/what-are-batchlog_endpoint_strategy-options)

Explore Cassandra batchlog endpoint strategies: prefer local, random remote, dynamic, and dynamic remote. Learn which option suits your needs for optimal batch logging.

- Tags: how-to-guide
- Published: 2026-07-29

### [How to Configure and Tune Hinted Handoff for Write Availability in Apache Cassandra](/apache/cassandra/how-to-configure-and-tune-hinted-handoff)

Learn how to configure and tune hinted handoff in Apache Cassandra to ensure write availability during node outages. Optimize your cluster with our guide.

- Tags: how-to-guide
- Published: 2026-07-29

### [How Murmur3Partitioner Works with Virtual Nodes (vnodes) for Data Distribution in Apache Cassandra](/apache/cassandra/how-does-murmur3partitioner-work-with-vnodes-for-data-distribution)

Learn how Murmur3Partitioner and virtual nodes (vnodes) ensure balanced data distribution and seamless scaling in Apache Cassandra for efficient data management.

- Tags: how-to-guide
- Published: 2026-07-29