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From "Demian Mrakovich (JIRA)" <>
Subject [jira] Created: (AMQ-1853) Optional non-blocking redelivery
Date Thu, 10 Jul 2008 16:32:00 GMT
Optional non-blocking redelivery

                 Key: AMQ-1853
             Project: ActiveMQ
          Issue Type: Wish
          Components: Broker
    Affects Versions: 5.1.0
            Reporter: Demian Mrakovich

When a message is redelivered the consumer blocks for the amount of time specified by the
redelivery delay. For a high load scenario where message order is irrelevant this is just
reducing performance and will result in a complete halt if the delay is long and several bad
messages are consumed in a short time. 

I think what I basically wish for is how it worked in versions 3.x, prior to fix for AMQ-268.
So I would very much like to have configurable option to NOT block consumers when redelivering

If no-one feels up to it, I'd still appreciate some hints and I could try to fix it myself.
Looking at ActiveMQMessageConsumer.rollback(), I was thinking something in the lines of just
scheduling a task to put the message back on queue after a delay - if configured to, instead
of stopping delivery and a schedule a task to resume delivery again. But I do not possess
an understanding of AMQ thorough enough to predict potential side effects of this, so any
analysis would be helpful.

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