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From "Ken Giusti (JIRA)" <qpid-...@incubator.apache.org>
Subject [jira] Created: (QPID-2841) QMF: set TTL on agent heartbeat messages
Date Wed, 01 Sep 2010 18:09:52 GMT
QMF: set TTL on agent heartbeat messages
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                 Key: QPID-2841
                 URL: https://issues.apache.org/jira/browse/QPID-2841
             Project: Qpid
          Issue Type: Improvement
          Components: Qpid Managment Framework
         Environment: all
            Reporter: Ken Giusti
            Assignee: Ken Giusti


Heartbeats are issued periodically by QMF agents.  Each heartbeat is stateless - there is
no information loss if a heartbeat is dropped or ignored by the client.   While performance
testing, it was discovered that multiple heartbeats will queue up should a console be unable
to consume them fast enough.  Most of these heartbeats are stale: the agent has issue a new
heartbeat(s) since the older heartbeat was queued.  Processing these "stale" heartbeats is
useless.

By setting the TTL in heartbeat messages, stale heartbeats will be discarded by the broker
instead of being sent to the console.



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