Apache Cassandra is an open source NoSQL distributed database trusted by thousands of companies for scalability and high availability without compromising performance.

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 …

Aug 5, 2025 · Unmaintained older versions of Cassandra are archived here. CVE fixes may be applied to unmaintained versions as decided on a case-by-case basis. The PGP keys used to …

Since it is a distributed database, Cassandra can (and usually does) have multiple nodes. A node represents a single instance of Cassandra. These nodes communicate with one another …

Read through the Cassandra Basics to learn main concepts and how Cassandra works at a high level. To understand Cassandra in more detail, head over to the Docs. Browse through the …

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.

Install the RPM build on CentOS and RHEL-based distributions if you want to install Cassandra using YUM. Install the Debian build on Ubuntu and other Debian-based distributions if you …

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 …

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 …

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.