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From "Martin C." <mart...@gmx.at>
Subject Re: Spring JmsTemplate Messages not consumed depending on session ID
Date Thu, 06 Oct 2011 06:52:24 GMT
Hi,

you should use JmsTemplate to send messages only. Have a look at
http://activemq.apache.org/jmstemplate-gotchas.html. You should use
Spring's DefaultMessageListenerContainer to receive messages. We are
using this, it works well.

Best regards,
Martin

On Wed, Oct 5, 2011 at 3:47 PM, James Black <be_strew@yahoo.co.uk> wrote:
> Hello,
>
> we have an issue with our Spring application consuming from queues in
> ActiveMQ.
>
> Versions:
>
> Spring 3.0.5
> ActiveMQ 5.5.0
> All messages are persistent.
>
> We have a need to throttle the rate at which messages are consumed from 1
> part of our application therefore we use the jmsTemplate to consume from a
> queue in this part.  For the rest of our application the DMLC is used as
> normal.  The DMLC seems to be operating as normal.
>
> There may be multiple instances of these elements and they all share the
> same JmsTemplate to receive messages with.
>
> The JmsTemplate uses the Spring CachingConnectionFactory with sessionCache =
> 200.
>
> For these elements they may consume from different queues or the same queue.
> Many combinations are possible.
>
> Our issue is that with prefetch left on at the default (1000) or even set to
> 1 we are seeing messages sticking on the queues.
>
> Looking at the debug or trace log information we can see that the session
> that a jmsTemplate gets will depend whether a message is retrieved from the
> queue or not.
>
> I believe that the prefetch has delivered the missing messages to a session
> that is back in the pool.  With prefetch=0 the problem does not appear to
> happen.
>
> Is this the behaviour that we should expect?
>
> When do the prefetch messages get returned to ActiveMQ?  I though the
> closing of the session by jmsTemplate would return the messages?
>
> Thanks any help appreciated :>
>
> --
> View this message in context: http://activemq.2283324.n4.nabble.com/Spring-JmsTemplate-Messages-not-consumed-depending-on-session-ID-tp3874547p3874547.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>

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