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https://issues.apache.org/jira/browse/DISPATCH-33?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13948513#comment-13948513
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ASF subversion and git services commented on DISPATCH-33:
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Commit 1582075 from [~tedross] in branch 'dispatch/trunk'
[ https://svn.apache.org/r1582075 ]
DISPATCH-33 - Defer local settlement of pre-settled deliveries to leverage
session flow control to protect memory.
> Use session flow control to protect the router's memory
> -------------------------------------------------------
>
> Key: DISPATCH-33
> URL: https://issues.apache.org/jira/browse/DISPATCH-33
> Project: Qpid Dispatch
> Issue Type: Improvement
> Components: Router Node
> Affects Versions: 0.2
> Reporter: Ted Ross
> Fix For: 0.3
>
>
> Dispatch will allow its internal buffers to grow without bound if message
> producers are faster than message consumers. It would be possible to apply
> back-pressure on senders using link credits but this has some pathological
> effects depending on the message routing patterns in effect (i.e. well
> behaved producers may find themselves punished for others' transgressions).
> A better approach is to use session-based flow control to put a cap on the
> amount of memory a single producer can consume in the form of in-flight
> messages. This is better because it applies back pressure only to those
> producers that are over-producing. Furthermore, session flow control is
> frame-based (as opposed to link-credits which are message based) which ties
> the limits to actual memory use because frames are bounded in size.
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