[開発][WMQ] the difference b/w DeadLetterQueue and BackOutQueue

The dead letter queue was always used in MQSeries (the last time I used MQ) to store messages that arrived at the queue manager but the queue didn't exist. For eample, if the message was address to queue manager X and queue Y, it would arrive via a channel at manager X.

If the receiver channel discovered there was no queue Y, it would be placed in the dead letter queue.

The backout queue, on the other hand, is more of an application-level thing (at least in terms of MQ). When an MQ client cannot process the message for some reason, it can back it out for later processing. If it's backed out too many times (the threshold can be configured), it gets moved to the backout queue.

ref:
http://stackoverflow.com/questions/876137/what-is-the-difference-between-a-dead-letter-queue-and-a-back-out-queue

tag
IBM WebSphere MQ WMQ JMS DeadLetterQueue BackOutQueue

tag : WebSphere MQ DeadLetterQueue BackOutQueue dead letter backout queue

2011-06-08 23:39 : 開発 : コメント : 0 : トラックバック : 0 :
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