# Apache Cassandra 4.0 Apache Cassandra® 4.0 ===================== Cassandra 4.0 introduced significant improvements in performance, stability, and operational stability. While Apache Cassandra 5 is now the latest release, Cassandra 4 remains a widely adopted and stable upgrade path for customers migrating from Cassandra 3. [Upgrade today](/contact-us/) [Request Cassandra Health check](https://cloudops.netapp.com/optimize-your-cassandra-deployment-with-a-health-check-from-netapp-instaclustr-lp.html) ![Apache Cassandra logo texture](https://www.instaclustr.com/wp-content/uploads/product-texture-logo-cassandra-updated.webp) Available on-prem and cloud platforms ![AWS logo](https://www.instaclustr.com/wp-content/uploads/aws-color-logo.svg) ![Microsoft Azure logo](https://www.instaclustr.com/wp-content/uploads/ms-azure-logo-1.svg) ![Google Cloud logo](https://www.instaclustr.com/wp-content/uploads/google-cloud-color-logo.svg) Apache Cassandra 5.0 is now generally available ------------------------------------------------- Apache Cassandra 5.0 offers advanced features such as Vector Search and Storage-Attached Indexes (SAI)—recommended for new deployments and modern, data-intensive applications. This page provides information on Apache Cassandra 4.0, which remains fully supported and serves as a reliable, production-grade upgrade path for customers migrating from Cassandra 3.x. Explore Cassandra 5.0 now! [ Upgrade now ](https://www.instaclustr.com/platform/apache-cassandra-version-5-0/) What is Cassandra 4.0? ---------------------- Apache Cassandra 4.0 is the first major release in the Cassandra community in over six years. Cassandra 4.0 significantly enhances the NoSQL database’s performance. Meet Instaclustr forCassandra 4.0 --------------------------------- Aside from a range of enterprise-grade feature additions, Cassandra 4.0 comes with significant improvements to stability and performance over previous releases. - Performance + Streaming between nodes is five times faster, and throughput on reads and writes is 25% quicker than previous versions. [Learn more](https://www.instaclustr.com/blog/cassandra-tools-updated-cassandra-4-0/) - Stability + Cassandra 4.0 is exhaustively tested to ensure stability in production environments. [Learn more](https://www.instaclustr.com/blog/apache-cassandra-4-0-stability-and-testing/) - Full query logging capability + There are a number of exciting use cases for full query logs in Cassandra. Full query logs allow you to log, replay, and compare CQL requests live without affecting the performance of your production environment. [Learn more](https://www.instaclustr.com/blog/full-query-logging-with-apache-cassandra-4-0/) - Virtual tables + Query system metrics directly using CQL for easier monitoring and troubleshooting. [Learn more](https://www.instaclustr.com/blog/apache-cassandra-4-0-virtual-tables/) - Compression algorithms + More efficient compression algorithms than previous versions. [Learn more](https://cassandra.apache.org/_/blog/Apache-Cassandra-4.0-Overview.html) - Changes to incremental repair + To learn more about Cassandra 4.0, [contact our Cassandra experts](https://www.instaclustr.com/contact-us/) for a free consultation or [sign up for a free trial of our Managed Cassandra service](https://console2.instaclustr.com/signup?_ga=2.200991470.1505602066.1726152168-1815699945.1710961315&_gl=1*q7u6ha*_gcl_aw*R0NMLjE3NTMyOTA0MDIuQ2owS0NRandrSUxFQmhEZUFSSXNBTC0tcGp4OWVRZGpBc29zb2lQdVk1TUVMWGt0V0l5V2tZQjBvVnVsNkJhdTRFd0wyY1F0MXNzLWJzUWFBanhkRUFMd193Y0I.*_gcl_au*MTMzNDAwMDcyOS4xNzQ3MjU0NTQ4*_ga*MTM2OTc4OTg5MS4xNzQxODg5OTYy*_ga_4NBQSJMP6D*czE3NTMzMDA5MjIkbzQwNiRnMSR0MTc1MzMwMTQ4NSRqMzAkbDAkaDA.). [Learn more](https://www.instaclustr.com/blog/changes-to-incremental-repairs-in-cassandra-4-0/) - Netty Transport + This allows Cassandra to move away from having an N threads per peer model, to a single thread pool for all connections. This dramatically reduces performance issues related to thread signalling, coordination and context switching. [Learn more](https://www.instaclustr.com/blog/) Downloaddatasheet ![https://www.instaclustr.com/wp-content/uploads/down-arrow-download.svg]() Learn more about the fully managed and hosted Apache Cassandra offering on the Instaclustr Managed Platform. [Download](/wp-content/uploads/Insta_Platform_Datasheet_Apache_Cassandra.pdf) Benefits of Cassandra 4.0 ------------------------- - [ Database administrators ](#panel-1-1) - [ Engineers ](#panel-1-2) - [ Enterprises ](#panel-1-3) Database administrators Engineers Enterprises ### Database administrators With improved compaction to improve stability and full query logging to assist with debugging, operators will have a more enhanced overall experience with Cassandra 4.0. ### Engineers Get improved performance for the data infrastructure supporting your applications with 25% faster reads and writes and a 5x improvement in streaming between nodes. ### Enterprises Reduce the overall costs of your data infrastructure with significant improvements to stability and performance in Cassandra. More easily achieve SOX and PCI compliance requirements with comprehensive audit logging in Cassandra 4.0. Recommended resources --------------------- [ Blog Instaclustr Announces the General Availability of Managed Apache Cassandra® 4.0 General availability of Cassandra 4.0 as part of our Managed Cassandra offering on the Instaclustr Managed Platform... ](https://www.instaclustr.com/blog/general-availability-of-managed-apache-cassandra-4-0/) [ Blog Apache Cassandra® 4.1: Discover What’s New Apache Cassandra® 4.1 is bringing some seriously useful new features to the table you do not want to miss out... ](https://www.instaclustr.com/blog/apache-cassandra-4-1-discover-whats-new/) [ Blog The Instaclustr LDAP Plugin for Apache Cassandra® 2.0, 3.0, and 4.0 LDAP (Lightweight Directory Access Protocol) is a common vendor-neutral and lightweight protocol for organizing authentication of... ](https://www.instaclustr.com/blog/the-instaclustr-ldap-plugin-for-cassandra/) Spin up a Cassandra Cluster in minutes ------------------------------------------ It takes just a few clicks before you can start to deploy new nodes and monitor your clusters through a simple dashboard. [ Free trial ](https://console2.instaclustr.com/signup?_gl=1*br08d1*_gcl_au*MTE5MzM0MzMyNi4xNzI3MjAxODU1LjQ0MjI4MjQ1LjE3MzEzNTU5NzkuMTczMTM1NTk3OQ..*_ga*MTgxNTY5OTk0NS4xNzEwOTYxMzE1*_ga_4NBQSJMP6D*MTczMTQzMTQ0NS4xNzguMS4xNzMxNDM3MTU0LjYwLjAuMA..&_ga=2.82335830.1159328267.1731331456-1815699945.1710961315)