Team RabbitMQ and community members have recently identified a curious scenario where a freshly started node could consume a surprisingly high amount of memory, say, 1.5 GiB or so. We’d like to share our findings with the community and explain what short term and longer term workarounds are available.

RabbitMQ 3.10 was released on the 3rd of May 2022, with many new features and improvements. This blog post gives an overview of the performance improvements in that release. Long story short, you can expect higher throughput, lower latency and faster node startups, especially with large definitions files imported on startup.

RabbitMQ 3.10 has recently been released and has some major new features which focus on optimizations, performance, and stability.

Release notes page includes information about the specific changes in this version as well as various installation assets. See our upgrade guide for more information about upgrading to 3.10.0.

Let’s have a tour!

RabbitMQ RPM packages for CentOS 7 will be discontinued from May 2022 because that CentOS release series provides outdated versions of OpenSSL and Linux kernel.

CentOS 7 users are recommended to migrate to a new cluster which uses a more recent distribution via one of the options:

• In-place Upgrades
• definition transfer
• Blue-Green Deployment upgrade.

Quorum queues in RabbitMQ 3.10 provide a safer form of dead lettering that uses at-least-once guarantees for the message transfer between queues. This blog post explains everything you need to know to start using at-least-once dead lettering.

This post also introduces two other RabbitMQ 3.10 features: message Time-To-Live (TTL) for quorum queues and Prometheus metrics for dead lettered messages.

We intend to release RabbitMQ 3.10.0 on 11 April 2022. While we have been testing it internally for some time, with production-like workloads, we need your help to check that it is as stable and reliable as we believe it is.