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https://issues.apache.org/jira/browse/CAMEL-7950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14192585#comment-14192585
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Aaron Whiteside commented on CAMEL-7950:
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Testing SJMS with HornetQ and performance is very bad. About 50 messages a 
second, no matter how many threads I use to call an endpoint..

I've written test applications using the pure JMS API against HornetQ and I was 
able to achieve 25k+ messages a second on my workstation, that was with 
persistence and no transactions.

Obviously here creating a new Session per Exchange is a bad idea.

> SJMS's Producers creates a new session per message request, this is both a 
> performance issue and problem when using transactions
> --------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-7950
>                 URL: https://issues.apache.org/jira/browse/CAMEL-7950
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-sjms
>    Affects Versions: 2.14.0
>            Reporter: Aaron Whiteside
>
> SJMS's Producers creates a new Session per message request, this is both a 
> performance issue and a problem when using transactions.
> Sessions should be cached in ThreadLocal for performance reasons. Of course 
> you may want to limit the total number of cached sessions or even implement a 
> stack/queue of sessions to reuse. As long as a new session isn't created for 
> every single message produced to a Queue/Topic.
> Second the same session should be used for any consumption and production to 
> any queues by a thread when transactions are enabled. If a single route is 
> consuming from JMS and producing to JMS, one would expect the same session to 
> be used to provide atomic consumption and production to the queues/topics 
> involved.



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