ActiveMQ

ActiveMQ is a message broker owned by the Apache Foundation, written in Java.

ActiveMQ has two variants: ActiveMQ Classic and ActiveMQ Artemis (AMQ). Red Hat also has a proprietary, supported version of AMQ Artemis.

Useful Information

• AMQ periodically monitors the disk utilization of the system (based on the disk-scan-period configuration option). If the threshold defined in max-disk-usage is exceeded, AMQ blocks all incoming messages until the disk utilization falls below max-disk-usage. For this reason, it’s a good idea to not keep your data on the same partition as other dynamic data, such as log files.