Flow Control in the Absence of Consumers

Note: Prior to release 8.4, if there was no message consumer for a destination, the server would not enforce flow control for the destination. That is, if a queue had no started receiver, the server did not enforce flow control for that queue. Also, if a topic had inactive durable subscriptions or no current subscriber, the server did not enforce flow control for that topic. For topics, if flow control was set on a specific topic (for example, foo.bar), then flow control was enforced as long as there were subscribers to that topic or any parent topic (for example, if there were subscribers to foo.*).

This behavior can be restored by setting the flow_control_only_with_active_consumer property but note that this property and the corresponding behavior are deprecated and will be removed in a future release.