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MQGET

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narki

Posted: Sun Jun 17, 2007 9:42 am Post subject: MQGET

Acolyte

Joined: 19 Dec 2005
Posts: 67

We have four diffrent main message flow for 4 diffrent transaction which needs to send a requet to a same service and get response from service.
we are planning to use MQGet node for node for retrive message from the response queue. We are planning to keep single
response queue for all 4 diffrent trnsactions i.e. messageflows. Do you see any risk in this.

marcin.kasinski

Posted: Sun Jun 17, 2007 12:32 pm Post subject: Re: MQGET

Sentinel

Joined: 21 Dec 2004
Posts: 850
Location: Poland / Warsaw

One thing you should consider is performance impact of using the same response queue.
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Marcin

fjb_saper

Posted: Sun Jun 17, 2007 12:58 pm Post subject:

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

You might as well want to consider what happens if the service replies after the MQGet node timeout...

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narki

Posted: Sun Jun 17, 2007 4:27 pm Post subject:

Acolyte

Joined: 19 Dec 2005
Posts: 67

If i would have 4 diffrent flows configured to 4 diffrent response queue, it means each messageflow is listening to therit own queue. basically there are four diffrent thread which are trying to pull message.

Now If we have a subflow which basically has MQGet node and this subflow is being used in all mainflows, then also we are going to have four diffrent thread running.

As far as time out is concern each instance which has sent the request will wait for set amout of time before it gets the timeout.

My concern if number if instances of main flow increases should increase
number of thread on the single response queue. This should not lead to any collision.

jefflowrey

Posted: Sun Jun 17, 2007 6:22 pm Post subject:

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981

Suppose that one flow stops picking up messages, for whatever reason.

When you see that there are messages piling up on the queue - which flow will be causing the problem?
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I am *not* the model of the modern major general.

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