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| Service Integration Bus and MQ |
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| Gaya3 |
 Posted: Thu May 14, 2015 12:26 pm Post subject: Service Integration Bus and MQ |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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Hi All
Taking the MQ Security in to consideration, Message Sequencing problem and the Server Conn channel problems from WAS to MQ, Introduced Service Integration Bus on WebSphere Application Servers to connect with IBM MQ.
MQ to SIB -> connects through Sender channel (SSL Configured)
SIB to MQ thru sender channel (SSL Configured)
Service Integration Bus - Security enabled.
If there is any Message Sequence requirment, we've to enable Strict Messaging Order on SIB queue. (only 1 WAS Application thread will be using the SIB Q and locks it) (2 WAS Server can become ACTIVE-ACTIVE in this scenario, only 1 will be consuming at a time, if that fails quickly the second app server will get connected and start consuming) {Mult-Instance desing}
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Gayathri
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| gbaddeley |
| Posted: Thu May 14, 2015 10:07 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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Is there a question in that post?
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Glenn |
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| Gaya3 |
| Posted: Fri May 15, 2015 5:35 am Post subject: |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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no no its not a question, it's just an idea spreading in general discussion board .
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Gayathri
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| fjb_saper |
| Posted: Sun May 17, 2015 5:36 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| Gaya3 wrote: |
| no no its not a question, it's just an idea spreading in general discussion board . |
Your sequencing can only be preserved if there is only a single route from the originating queue manager to the SIBUS. If there are multiple routes you cannot guarantee the sequence.
And of course all queues involved and this includes the relevant transmission queues have been set to delivery sequence FIFO...
Just imagine what a delivery sequence of priority on a transmission queue could do to your sequencing... 
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| Gaya3 |
| Posted: Mon May 18, 2015 5:35 am Post subject: |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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true, here there are couple of business requirements where they need strict sequencing and its coming from single source and only 1 thread running all the way to SIB/WAS where WAS is also running in single threaded.
The problem here is WAS cannot able to control the Strict messaging order on MQ, So SIB came in to the picture.
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Gayathri
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| gbaddeley |
| Posted: Tue May 19, 2015 5:32 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| Gaya3 wrote: |
true, here there are couple of business requirements where they need strict sequencing and its coming from single source and only 1 thread running all the way to SIB/WAS where WAS is also running in single threaded.
The problem here is WAS cannot able to control the Strict messaging order on MQ, So SIB came in to the picture. |
Nothing can control strict message order in MQ, as MQ does not have features to assure message order in all circumstances. You cannot guarantee that only 1 source thread will ever run.
Business requirements for strict message ordering should be met by application based message marshalling and intelligent handling of out-of-order, missing and duplicate messages in a robust manner. It could be easier to relax the strict message order requirement, eg. by combining ordered data into single MQ messages.
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