This is the official documentation for Apache Cassandra. If you would like to contribute to this documentation, you are welcome to do so by submitting your contribution like any other patch following these instructions.

Additional information This section covers how to get started using Apache Cassandra and should be the first thing to read if you are new to Cassandra.

Here are known Cassandra client drivers organized by language. Before choosing a driver, you should verify the Cassandra version and functionality supported by a specific driver.

Cassandra 5.0 introduces vector search, which leverages storage-attached indexing and dense indexing techniques to transform data exploration and analysis. This update is especially impactful for domains like machine learning and artificial intelligence (AI).

Apache Cassandra powers mission-critical deployments with improved performance and unparalleled levels of scale in the cloud.

Sep 5, 2024 · The Cassandra project is happy to announce the general availability of Apache Cassandra® 5.0! This major release marks a significant milestone in the evolution of the world’s most powerful distributed database used by over 30,000 organizations worldwide.

Metrics in Cassandra are managed using the Dropwizard Metrics library. Metrics can be queried via JMX, Virtual Tables, or pushed to external monitoring systems using a variety of built-in reporters or third-party reporter plug-ins.

Cassandra was initially designed at Facebook using a staged event-driven architecture (SEDA). This initial design implemented a combination of Amazon’s Dynamo distributed storage and replication techniques and Google’s Bigtable data and storage engine model.

Download and install Apache Cassandra 5.0 source code from the Git along with the dependencies.

Apache Cassandra powers mission-critical deployments with improved performance and unparalleled levels of scale in the cloud.