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MQSeries.net Forum Index » Workflow Engines - IBM MQ Workflow & Business Process Choreographer » Performance Cost of Private Worklists

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Bobbo
PostPosted: Tue Jan 27, 2004 12:37 pm    Post subject: Performance Cost of Private Worklists Reply with quote

Acolyte

Joined: 17 Jun 2002
Posts: 50
Location: Buffalo, New York

What is the performance cost to the system of a Private Worklist? We envision n number of private worklists being created per user. How does this affect the performance of the system? Storage requirements on the database end?

Thanks.

Bob
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jmac
PostPosted: Tue Jan 27, 2004 12:54 pm    Post subject: Reply with quote

Jedi Knight

Joined: 27 Jun 2001
Posts: 3081
Location: EmeriCon, LLC

Bob:

As I understand it, the only cost is going to be the database space, and I never seen anything published as to how much space it takes up... But I would doubt it is a large amount. Esentially any type of permanent list is simply storing the Sort, Filter and Threshold criterea in the DB. The actual query is done against the ExecutionService
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workflowdude
PostPosted: Wed Jan 28, 2004 7:39 am    Post subject: Reply with quote

Novice

Joined: 17 Nov 2003
Posts: 24
Location: US

Do all query methods on the ExecutionService hit the database? So what do you mean by persistent objects stored on the workflow server. I see this mentioned at a lot of places in the Programing guide
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jmac
PostPosted: Wed Jan 28, 2004 8:14 am    Post subject: Reply with quote

Jedi Knight

Joined: 27 Jun 2001
Posts: 3081
Location: EmeriCon, LLC

workflowdude wrote:
So what do you mean by persistent objects stored on the workflow server.


Not sure what you are talking about here. I didn't mention persitent objects.

I will try to answer what I think you are asking:

The queries done against "persitent lists" are actually done against the ExecutionService object in the long run. When you query a list, you don't need to specify threshold, sort, filter... but what actually happens is they get that information out of the database, then do the query "as if" it were done against the execution service object, useing the sort, filter and threshold criteria that were specified for the list.
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