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From "Colin MacNaughton (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-2255) activemq-flow: Added common Cursored queue implementation to be used by both Shared and Exclusive and Transaction queues.
Date Sun, 17 May 2009 00:16:50 GMT
activemq-flow: Added common Cursored queue implementation to be used by both Shared and Exclusive
and Transaction queues. 
--------------------------------------------------------------------------------------------------------------------------

                 Key: AMQ-2255
                 URL: https://issues.apache.org/activemq/browse/AMQ-2255
             Project: ActiveMQ
          Issue Type: Improvement
          Components: Broker
    Affects Versions: incubation
         Environment: N/A
            Reporter: Colin MacNaughton
             Fix For: incubation


Along with bug fixes to the SharedQueue cursoring implementation, this change:
-factors queue cursoring out of the shared queue implementation moving it into CursoredQueue.
-Introduces ExclusivePersistentQueue based on the CursoredQueue mentionned above.  The exclusive
queue will be used by durables, transactions and for non durables that wish to offload non
persistent messages to disk when they fall behind. 
-This fix also address some performance issues in the SharedQueue/cursoring implementation
that bring it back up to speed with the original non persistent shared queue implementation

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