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| Possible loss of messages? |
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| jfecq |
 Posted: Thu Sep 27, 2012 6:32 pm Post subject: Possible loss of messages? |
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Apprentice
Joined: 24 Sep 2012
Posts: 36
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Hi,
I don't know if my question makes sense.
I have a flow which consumes messages from a queue and route to a webservice. If the webserive is down for some reasons, will the messages be lost, and how can I recover them?
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| Vitor |
| Posted: Thu Sep 27, 2012 6:52 pm Post subject: Re: Possible loss of messages? |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| jfecq wrote: |
| I don't know if my question makes sense. |
It mostly makes sense. It displays a fairly fundamental lack of understanding of WMQ, WMB & transactionality in general.
| jfecq wrote: |
| I have a flow which consumes messages from a queue and route to a webservice. If the webserive is down for some reasons, will the messages be lost, and how can I recover them? |
Not if you've configured the flow to retain them in the event of error; the default position if you've taken no action and the messages are persistent.
You can of course augment this with something a bit more sophisticated.
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Insanity is the best defence. |
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| jfecq |
| Posted: Thu Sep 27, 2012 7:08 pm Post subject: |
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Apprentice
Joined: 24 Sep 2012
Posts: 36
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| lancelotlinc |
| Posted: Fri Sep 28, 2012 5:07 am Post subject: Re: Possible loss of messages? |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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| jfecq wrote: |
| I have a flow which consumes messages from a queue and route to a webservice. If the webserive is down for some reasons, will the messages be lost, and how can I recover them? |
If an error happens in your flow, your error handler should backout the message till the error is resolved. If you attend the WMB Dev I training class, the second day, after lunch, the instructor talks about proper error handler design. Had you attended training? If not, why not?
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