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| Dynamic aggregation pattern |
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| nelson |
 Posted: Mon Jun 01, 2015 6:40 am Post subject: Dynamic aggregation pattern |
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Partisan
Joined: 02 Oct 2012
Posts: 313
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Hi all,
On your experience, do you think it is a good idea to handle the dynamic aggregation yourself in memory? something like a hash table of request(s)/reply(s), independently of the protocol..
We usually need to take advantage of existing legacy systems that do not support multiple replies (like MQ groups). For instance, a legacy back end service is designed to handle one request/response (even existing broker services that we want to reuse works this way), but a new service (to the front end application) requires multiples calls to the back end in the same request, broker then needs to reply a consolidated response.
So we are working in a pattern to handle/orchestrate dynamic aggregation...
Any advice is very appreciated. |
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| fjb_saper |
| Posted: Mon Jun 01, 2015 8:16 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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your patterns will be aggregation and collection...
Look them up! 
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MQ & Broker admin |
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| mqjeff |
| Posted: Mon Jun 01, 2015 8:21 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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You should consider the memory needed.
If you do use a memory only solution, you should use Global Cache - safer that way, plus allows you to complete aggregation in separate threads of a flow or separate EGs.
You should also make sure you know when the aggregation/collection is completed...
And remember if you're making a synchronous call (like a SOAP or REST call) then you don't need aggregation, just put the input message or the responses in some useful place. |
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