Posted On: Nov 9, 2022

Amazon MQ now provides support for ActiveMQ 5.17.2, which includes several fixes and enhancements to the previously supported version, ActiveMQ 5.17.1. The default connection limits for ActiveMQ brokers on Amazon MQ has been increased to 300 connections per transport protocol for mq.t2.micro and mq.t3.micro broker types and 2,000 connections per transport protocol for all other supported broker types.

Amazon MQ is a managed message broker service for Apache ActiveMQ and RabbitMQ that makes it easier to set up and operate message brokers on AWS. You can reduce your operational burden by using Amazon MQ to manage the provisioning, setup, and maintenance of message brokers. Amazon MQ connects to your current applications with industry-standard APIs and protocols to help you easily migrate to AWS without having to rewrite code. 

The new default limits allow you to safely increase the number of connections to your ActiveMQ broker for higher performance. These new default limits will be applied to all new brokers and existing ones after the next restart or maintenance window, regardless of the version of ActiveMQ on the broker.

If you are running ActiveMQ 5.17.1 or earlier, we encourage you to consider upgrading to ActiveMQ 5.17.2 with just a few clicks in the AWS Management Console. If your broker has automatic minor version upgrade enabled, AWS will automatically upgrade the broker to version 5.17.2 during a future maintenance window. To learn more about upgrading, please see the Managing Amazon MQ for ActiveMQ engine versions, and for connection limits, please see the section on Monitoring Amazon MQ brokers in the Amazon MQ Developer Guide. To learn more about the versions, read the ActiveMQ release notes