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From "James Strachan" <>
Subject Re: Session, MessageProducer are thread safe
Date Tue, 25 Jul 2006 05:08:47 GMT
Some background here...

if you are using non-persistent messaging or are using async sends,
I'd just have a single session and producer and just synchronize
access to them both just in case. Though to behonest the
session.create*Message() methods are all completely thread safe as
they just create POJOs. So its just the MessageProducer.send() method
you need to synchronize on (though again, you probably don't need to
with ActiveMQ to be honest but its worth testing to make sure :).

I guess we could wrap up a MessageProducer that does the
synchronization for you under the covers?

On 7/21/06, Vishu <> wrote:
> My requirement is something like my app will make connection, create session
> and MessageProducer... then I have multiple threads to send messages in MQ
> at once...
> As I read from JMS spec .. connection is thread safe but session and
> messageProducer are not...
> so I have two options
> 1. make send call synchronise ... send from one thread at a time..
> 2. create session and messageProducer for each thread then send message
> concurrently..
> I don't know what are performance issues .. in both the situations..
> I don't how heavy to create session and messageProduder from every thread
> when thare is send call..
> tanx
> vish
> --
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