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| skikeowee |
 Posted: Fri Apr 21, 2006 8:51 am Post subject: Local vs. Remote Queues |
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Newbie
Joined: 21 Apr 2006
Posts: 2
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| Is there any documentation on best practices surrounding the use of local vs. remote queues? Some in my company are indicating that we always must have a local queue manager in all situations. I understand that when an application is a publisher of messages that it is beneficial to have a qm as close as possible. But it seems to me that if an application is simply a consumer of asynchronous messages that it would be ok to have a remote queue. |
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| wschutz |
| Posted: Fri Apr 21, 2006 8:57 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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When you say "remote queues", I think you really mean: access the queues via the MQ client versus a server bound application. You can't GET messages from remote queues.
Is that what you are asking?
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-wayne |
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| skikeowee |
| Posted: Fri Apr 21, 2006 9:18 am Post subject: QM Local vs. Remote |
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Newbie
Joined: 21 Apr 2006
Posts: 2
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| Yes I'm saying using a MQ client that gets messages from a queue managed by a QM across the network instead of getting it from a QM that is on the same box or in the LAN. |
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| jefflowrey |
| Posted: Fri Apr 21, 2006 9:26 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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The only reason an application MUST have a queue manager local is if it is using 2-phase commit - XA coordinated transactions between MQ and a database.
There are even some cases where the Extended Transactional Client will negate that requirement.
There is more logic that should be put into a client, including more errors to handle properly and the requirement to retry the connection in case of certain types of failures. So it's a little more complicated to write.
But requiring a queue manager local on the machine as every application is going to be very expensive license wise. And very expensive to administer.
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I am *not* the model of the modern major general. |
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| wschutz |
| Posted: Fri Apr 21, 2006 9:27 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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and..if you search here for "clients", "pros", "cons" (search for all the terms), you'll get additional opinions....
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-wayne |
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