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MQSeries.net Forum Index » IBM MQ Java / JMS » FIFO Message Delivery in a distributed Environment

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wyatt
PostPosted: Tue Feb 28, 2006 11:39 am    Post subject: FIFO Message Delivery in a distributed Environment Reply with quote

Voyager

Joined: 28 Nov 2004
Posts: 76
We are receiving multiple business transactions within a single MQSeries message in a high-volume messaging system. The business transactions within the single MQ message must be processed in FIFO order. Currently, the business transactions are extracted from the MQ message and wittent to a single queue hosted on a z/OS server (FIFO order).

This processing will be moved to distributed Application Server. The business transactions will be extracted from the MQ message and written to a staging DB; each business transaction inserted into the the DB will include a sequence number- the consuming application will honor the sequence number and process the data in FIFO order.

What are some of the options you've seen implmented to solve this problem?
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Vitor
PostPosted: Wed Mar 01, 2006 12:23 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
The situation you're describing is "message affinity" and is held to be a bad thing in the MQ world, if sometime unavoidable. Use those two words in the search at the top of this page & you'll see a large amount of discussion here about it.

In summary you're probably looking at MQ's grouping and sequencing options, which you'll find discussed both in the search I've suggested and the Application Guide. Am I correct that when you say "distributed Application Server" you mean "not z/OS" rather than a number of logically or geographically distributed machines?
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