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POUsing JMS as a request/response service
 

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    <p>There are various implementations for using JMS as a request/response service. I would like to know the ideal implementation. Below are these various implementations. </p> <hr> <h3>1) Permanent request queue, Dynamic response queue</h3> <p>All request messages are published into a single request queue specifying the reply queue. The service consumes the request message and publishes a message back onto a dynamic reply queue.</p> <ul> <li>No need for a correlation id. </li> <li>Multiple consumers of their corresponding response queues</li> </ul> <h3>2) Permanent request queue, Permanent response queue</h3> <p>All request message are published into a single request queue, specifying a unique id in the jms properties. Unique id is stored locally. Service consumes request message and publishes message back onto response queue. A single response consumer will consume the message and act appropriately based on the unique id.</p> <ul> <li>Correlation id required. </li> <li>Single consumer of the response queue</li> </ul> <h3>3) Permanent request queue, Permanent response topic</h3> <p>All request messages are published into a single request queue, specifying a unique id in the jms properties. The service consumes the request message and publishes a message with the same unique id in the jms properties back onto the topic. Consumers of the response will set a message selector to select for only the message the contains the unique id.</p> <ul> <li>Correlation id required. </li> <li>Multiple consumers of the response topic</li> </ul> <p>Does anyone know other implementations? And which of these implementations is the ideal solution for using JMS as a request/response service?</p>
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    1. COWhy in the first approach can multiple consumers read from the dynamic response queue? Only one consumer should be reading from a given response queue because a message can be read from a queue only once and so if the unintended recipient reads the message, the intended recipient will never receive that message.
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      1. USDerek Mahar
    2. COSorry i didn't clarify this correctly. Multiple consumers are consuming off their own (different) dynamic response queues. They are not reading off the same queue.
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