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PEPERO
PostPosted: Mon Jan 15, 2018 8:21 am Post subject: MQclient Connection Reply with quote

Disciple

Joined: 30 May 2011
Posts: 171

Hi all;
Suppose due to some considerations not wanting to define Sender/Receiver channels , Is it possible and applicable to use MQClient connection from within a message flow to local queue hosted in an external queue manager? Does the available MQ components support this type of connection?
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fjb_saper
PostPosted: Mon Jan 15, 2018 1:11 pm Post subject: Reply with quote

Grand Poobah

Joined: 18 Nov 2003
Posts: 19548
Location: LI,NY

In IIB10 MQINPUT, MQGET, MQOUTPUT nodes will support this type of behavior.

Have fun
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MQ & Broker admin
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zpat
PostPosted: Tue Jan 16, 2018 1:15 am Post subject: Reply with quote

Jedi Council

Joined: 19 May 2001
Posts: 5625
Location: UK

Using a direct client connection does tightly couple the flow to the other QM rather than allowing the local QM to act as store/forward.

So if you have a local QM for the broker, it would be better to route MQ traffic through that.
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Well, I don't think there is any question about it. It can only be attributable to human error. This sort of thing has cropped up before, and it has always been due to human error.
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joebuckeye
PostPosted: Tue Jan 16, 2018 5:21 am Post subject: Reply with quote

Partisan

Joined: 24 Aug 2007
Posts: 328
Location: Columbus, OH

To add to what zpat wrote, by tightly coupling your flow to an external QM you are greatly restricting the flexibility of your design.

If that remote QM goes down then your flow fails.

Scaling your flow becomes much harder.

Load balancing and fail over are not available.

You say you are restricted from making channel connections so make sure you point out the limitations (and the three above are just the tip of the iceberg) of that choice. Sometimes people make design decisions because they think something seems hard or a pain to do without realizing the consequences of those decisions down the road.
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