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Publish/subscribe question

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hench

Posted: Tue Jun 14, 2005 5:27 am Post subject: Publish/subscribe question

Newbie

Joined: 09 Aug 2004
Posts: 9

Hi,

Suppose we have a scenario with one publisher and multiple subscribers.

What if ALL subscribers are down ( eg. due to network failures and so on ) are publications then held on the queue until one or all of the subscribers become "online" again ?

Does MQ keep information about who has previously subscribed ?

How does it work ?

Regards
Hench

jefflowrey

Posted: Tue Jun 14, 2005 5:29 am Post subject:

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981

It depends on if it is a durable or retained subscription or not.

If it is not durable or retained, then no messages will be published if there are no subscribers active for a current topic.

Consult the documentation of your pub/sub broker for more information. Also, the Using Java manual and the "Pub/Sub" manual.
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I am *not* the model of the modern major general.

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