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Support pac ma0c

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Andrey

Posted: Thu Mar 07, 2002 3:09 am Post subject:

Apprentice

Joined: 02 Sep 2001
Posts: 37
Location: Belarus, Minsk

Could somebody explain me why MQ broker does not disconnect from the queue after sibscriber is unsubscribed. Other words, MQ broker does not allow to remove queue which is no longer used. Is there any solution of the problem?
Thanks in advance

kolban

Posted: Thu Mar 07, 2002 6:00 am Post subject:

Grand Master

Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA

Opening MQSeries queues is a relatively expensive operation. If the broker had to open each subscription queue each time it had a message to publish, that would potentially degrade performance. The broker then keeps a cache of open queues. This cache expires after a period of time which is configurable. The majority of usage patterns of Pub/Sub don't seem to need the deletion of a queue after publication.

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