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MQSeries.net Forum Index » IBM MQ Java / JMS » MQ triggering and Message listener

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pmehta
PostPosted: Tue Jun 05, 2007 1:32 am    Post subject: MQ triggering and Message listener Reply with quote

Novice

Joined: 29 Jul 2003
Posts: 13
Want to know when I should use MQ triggering and when to use Message listener.
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Vitor
PostPosted: Tue Jun 05, 2007 1:36 am    Post subject: Reply with quote

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Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
You should use triggering when you want your application triggered by an incoming message, and a listener when your application to listen for an incoming message.
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zpat
PostPosted: Tue Jun 05, 2007 1:55 am    Post subject: Reply with quote

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Joined: 19 May 2001
Posts: 5866
Location: UK
Triggering suits intermittent applications, where you don't want the application to be running all the time.

Listening suits more intensive and continous applications where you don't want the overhead of triggering and of loading the application for each message.

Listening can load-balance by simply running more threads which each listen on the same queue, this gives greater availability.

Always use MQGET with MQGMO_WAIT (and CONVERT, FIQ) in listener code - do not repeatedy issue MQGET without a wait option or wait in your own code as this will make the design either less responsive or inefficient.
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