[jboss-jira] [JBoss JIRA] Created: (JBMESSAGING-604) Duplicate message detection

Tue Oct 10 05:00:41 EDT 2006

Duplicate message detection
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                 Key: JBMESSAGING-604
                 URL: http://jira.jboss.com/jira/browse/JBMESSAGING-604
             Project: JBoss Messaging
          Issue Type: Feature Request
            Reporter: Tim Fox
         Assigned To: Tim Fox
             Fix For: 1.2.1

Whereas JMS requires once and only once *delivery* of messages, there are no such guarantees when sending messages to a queue/durable sub.

This can result in duplicate messages existing in a queue or durable sub.

For some clients this is unacceptable, so we should implement a feature which alerts to the presence of duplicates.

This can be done by keeping a persistent cache of message (or transaction) id on the server. Entries should time out after a period of time.

This will not remove duplicates 100% of the time since we cannot cache the previous values of id for ever, but only for a window.

See forum thread for more details

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