Any recommendation how to use JBM2 Producers Pool?

[adridi]

I have an OutBound Queue accessible from 120 different web application deployed on the same Servlet container; each application will be producing messages to the OutBound Queue.
I created two test cases to manage this and not sure what will be the recommended one:

1. Each producer has its own resource lookup at application startup – I create a connection and producer keep using it to send messages to the queue. Connection failure was detected many times as well as “too many open files�. 2 sockets were open for each connection.

2. All producers share the same connection, I was able to go further with this solution but down side that I created dependency on my application that can be moved to a different JVM where connection cant be shared.

I went thru the JBM2 doc and saw that solution (1) should be avoided but I am looking if there are better ways of managing producer’s pool.

Thanks,
Abdel

[ataylor]

you are correct that (1) should be avoided.

regarding (2), When you are using 1 connection per producer are you creating a new session per producer. JBM2 will share connections between sessions created by the same connection factory, see http://labs.jboss.com/file-access/default/members/jbossmessaging/freezone/docs/usermanual-2.0.0.beta3/html_single/index.html#connection-ttl.session.multiplexing.

JMs has no notion of pooling, A JMS producer should *not* be shared between application threads, each should have its own. If you want to cut down on the number of producers being used you can write your own send method and pool the producers your self, just make sure your send method is synchronized on the producer being used.

[timfox]

If you're servlets are running in the same AS instance as the broker and it's JBoss AS then you can just use the JMS JCA adapter to pool connections.

If it's not JBoss then you can share a ConnectionFactory (or ClientSessionFactory) instance between servlets - this will provide its own pooling of underlying connections.

[adridi]

Thanks Tim and Andy!
The JCA adapter pool works great for me.

Abdel