Sunday, August 7, 2011

temporary topic - is actually a temporary queue

Q: Since the topic is unknown to other sessions, (See also blog on temp topic vs sybase temp table http://bigblog.tanbin.com/2010/10/temporary-queue-jms.html) how do other sessions publish to it?
A: this topic is *revealed* via the ReplyTo header. Senders receive private "invitations" to send to the temp topic. Once received, the recipient can save that topic and hit it any time.

Temp topic accepts no subscriber except the topic's creator. 

This exclusive subscriber must be non-durable.

Since the topic has at most 1 receiver, it's better named a TemporaryQueue.

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