Paras Mehra

We are very excited to announce that we are offering Luna for Apache Cassandra™ (C*) 4.01 starting today! This means that you can run Open Source Cassandra 4.0 and have the peace of mind of receiving enterprise-grade support from DataStax. The incredible C* community deserves hearty congratulations for the amazing work they have done with the upcoming 4.0 release. You can thank this community for:&nbsp;

<ul>
	<li>The Most Stable and Reliable C* Ever . 2.3x more bugs were addressed in Cassandra 4.0 than in Cassandra 3.0; addressing those bugs improves correctness, elasticity, and scalability. Additionally, the community has adopted new <a href="https://cassandra.apache.org/blog/2018/08/21/testing_apache_cassandra.html"> testing </a> approaches: Replay, Property, and Fault-Injection testing are some of the approaches used to create a robust and stable release. Upgrade testing was introduced to ensure a smooth-as-silk upgrade process.</li>
</ul>

<ul>
	<li>25% - 85% Better Performances. Support for newer Java runtimes (Java 11) has unlocked performance gains in 4.0. <a href="https://thelastpickle.com/blog/2020/06/29/cassandra_4-0_garbage_collectors_performance_benchmarks.html"> Performance testing </a> has revealed a 25% increase in throughput and 30% reduction in latency when using CMS GC with Cassandra 4.0 on Java 11 versus Cassandra 3.11 on JDK8. We saw an 85% reduction in P99 client latencies when using Shenandoah GC on Java 11 versus Cassandra 3.11 on JDK8. Check out this <a href="https://www.witfoo.com/witfoo-coding/cassandra-4-0-testing/"> blog post </a> for additional benchmarking information.&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; In another area of improvement, new and improved zero-copy streaming capabilities cut down the time required to complete streaming tasks by up to 5x. Compaction enhancements have also cut memory consumption.</li>
	<li>Ease of Observability. A new feature called <a href="https://thelastpickle.com/blog/2019/03/08/virtual-tables-in-cassandra-4_0.html"> virtual tables </a> gives users the ability to access stats via CQL. Various elements, including configuration settings, metrics, or running compactions, can all be accessed via CQL, resulting in a better UX and access control.&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Prior to 4.0, C* users never had a great way to do audit logging. An entirely new <a href="https://cassandra.apache.org/blog/2018/10/29/audit_logging_cassandra.html"> audit logging </a> capability has been introduced, which gives users a performant way to track database and user level activity, while minimally impacting the read/write path.&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Production-safe <a href="https://cassandra.apache.org/doc/latest/new/fqllogging.html"> full query logging </a> is also available. This new feature is useful for live traffic capture, as well as traffic replay; it can also be used for debugging query traffic.&nbsp;</li>
</ul>

If you are still on C* 3, you should hop on the C*4 bandwagon! More throughput, less latency, with less resources, and easier to monitor; that’s free money in the bank . We totally get that users and enterprises need peace of mind when running their applications on open source software. That’s why we launched <a href="https://www.datastax.com/products/luna"> Luna </a> , a subscription service that offers support from the experts who heavily contributed to the Cassandra code. Luna subscribers will get support for general-purpose and technical questions regarding their open source Cassandra deployments. DataStax is here to help with any issues. As a company, we are committed to supporting C* and openly embracing open source software; we view Luna as proof of this commitment.&nbsp;

<a href="https://www.datastax.com/products/luna">Luna </a> comes as a tiered subscription based on three packages: Essentials, Professional, and Enterprise. There are no node limits and subscribers get access to the Luna portal to interact with a world-class C* support team. Once on the portal, you can file general-purpose or technical questions and get answers back within specified SLAs. Starting today, C* 4.0 will be on this list of supported versions for Luna.

But wait, there’s more! Not only do we have a team of engineers working toward open source C* releases, but we also have many people working on projects like <a href="https://k8ssandra.io/"> K8ssandra </a> , a production-ready way of running C* on Kubernetes. We’ll continue to move the community forward by extending Luna support to cover running C* 4.0 in Kubernetes with K8ssandra.

<ul>
	<li>We are supporting the current 4.0-RC1 version as of the time of writing this post. We will support the GA version of C* 4.0 once it is released. </li>
</ul>

DataStax Luna provides Enterprise-Grade Support for the Most Reliable, Elastic, and Fastest Cassandra Ever

Paras MehraProduct Management

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