Jay, >>>Question on Pub/Sub and JMS. I have a Unix server set-up with the >>>MQBroker. I have several applications connecting as MQ Clients using >>>JMS and subscribing to their respective topics. Once the Broker >>>delivers the messages to their topics, does the broker application have >>>any interaction with the Subscribers? When they open their subscription >>>queue, is it just an MQSeries agent delivering their data to them? Or >>>does each call to TopicSubscriber.receive() go through the Broker?
With JMS pub/sub using WMQ queues the receiver is just pulling messages off the subscriber queue. With JMS pub/sub using Direct/IP or multicast (WBI brokers 5.0) it's still a "push" model, but I believe things like NACKs can flow from the subscriber back to the broker. I don't believe that happens with queue-based subscribers. Regards, Christopher Frank Sr. I/T Specialist - IBM Software Group IBM Certified Solutions Expert - Websphere MQ & MQ Integrator -------------------------------------------- Phone: 612-397-5532 (t/l 653-5532) mobile: 612-669-3008 e-mail: [EMAIL PROTECTED] Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
