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From "Ted Ross (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DISPATCH-169) Add Ingress FIFO for incoming message-routed links
Date Fri, 11 Sep 2015 15:46:46 GMT
Ted Ross created DISPATCH-169:
---------------------------------

             Summary: Add Ingress FIFO for incoming message-routed links
                 Key: DISPATCH-169
                 URL: https://issues.apache.org/jira/browse/DISPATCH-169
             Project: Qpid Dispatch
          Issue Type: New Feature
          Components: Router Node
            Reporter: Ted Ross
            Assignee: Ted Ross
             Fix For: 0.6


The current router design does message routing synchronously with the receipt of delivered
messages.  The proposed improvement will put a FIFO for deliveries on the incoming links (only
for links used for message-routing, not routed-links).  This has the following benefits:
- A credit loop can be established for the producer such that back-pressure prevents the FIFO
from exceeding a defined limit.
- Messages that cannot be routed, or that are lost due to topology change can be resent from
the ingress link without the involvement of the attached client.
- Routing can be moved to a single thread thus eliminating lock contention on the route table.



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