STOMP Messaging Queue
Flowable Engage requires a messaging queue to enable real time communication between users that supports the STOMP protocol.
Any STOMP compatible messaging queue is supported but Flowable recommends ActiveMQ as the preferred messaging queue. For clustered environments you should choose a "network of brokers" over the master-slave configuration. It is best to have one ActiveMQ node per Flowable Engage server node and let it connect to it.
Please refer to Step-by-Step Installation for a guide on how to setup and configure ActiveMQ with Flowable Engage.