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| mlong30 |
 Posted: Tue Jul 19, 2005 1:07 pm Post subject: Get Messages Selectively MQ 5.3 |
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Novice
Joined: 01 Mar 2005
Posts: 17
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Is it possible to get messages selectively from a queue?
For example, if I have 10 messages in a queue, I just want to get/process message 5, then 6 etc... Is this possible?
Thanks.
Matt |
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| fjb_saper |
| Posted: Tue Jul 19, 2005 1:11 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Read up on your general messaging concepts.
Getting messages by position in a queue is a cruel misuse of messaging architecture.
Enjoy  |
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| jefflowrey |
| Posted: Tue Jul 19, 2005 1:39 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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As fjb_saper says.
Also, treating a queue as a database is an anti-pattern. That means it seems like a reasonable idea at first, and can be done. But it leads to horrible performance later on and creeping contact admin problems that could have been avoided.
_________________
I am *not* the model of the modern major general. |
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| malammik |
| Posted: Tue Jul 19, 2005 1:42 pm Post subject: |
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Partisan
Joined: 27 Jan 2005
Posts: 397
Location: Philadelphia, PA
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| zpat |
| Posted: Tue Jul 19, 2005 11:26 pm Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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You can set message priority in the sending application. That is the correct way to "jump the queue".
It is technically possible to browse the queue, looking for the message that interests you, then retrieve it specifying the message id of that message.
As mentioned above, that is normally a sign of an incorrect design. |
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| mlong30 |
| Posted: Wed Jul 20, 2005 5:18 am Post subject: |
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Novice
Joined: 01 Mar 2005
Posts: 17
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Thanks zpat!
I just needed to know, how to do this in case of an emergency like we had two weeks ago. We had a power outage on all of our systems, and we were having a tough time getting messages thru, so in this case it would be great if I can prioritize what messages I wanted to get process first until things all come back up normally.
Thanks again for answering my question.
Matt |
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