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

Duplicate message detection --------------------------- Key: JBMESSAGING-604 URL: https://jira.jboss.org/jira/browse/JBMESSAGING-604 Project: JBoss Messaging Issue Type: Feature Request Reporter: Tim Fox Assignee: Tim Fox Fix For: 2.0.0 Beta 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