[ARTEMIS-4688] add idle subscription removal after timeout

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Information Provided
• Affects Version/s: 2.32.0
• Component/s: Broker
• Assignee: Unassigned
• Reporter: Erwin Dondorp
• Created: 14/Mar/24 13:15
• Updated: 29/Aug/24 03:08
• Resolved: 29/Aug/24 03:08

Description

In Artemis, messages expire by their individual message setting. With some variations possible via address settings in the broker configuration.

But unused subscription-queues are never removed, except for the non-durable ones.

Request is to add a idle-timeout for queues from durable subscriptions. The subscription and its queue should then be deleted when there are no subscribers during a given time-period.

I believe ActiveMQ Classic has this via the offlineDurableSubscriberTimeout setting, see also https://activemq.apache.org/components/classic/documentation/manage-durable-subscribers.

 

This subject was also mentioned a while back in https://stackoverflow.com/questions/56115426/apache-activemq-artemis-durable-subscription-ttl; but, for our use-cases, using only message-expiry is not sufficient. this is because each abandonned durable subscription still stores messages, and is thus using resources.