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From "John Silva (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-1864) Rest protocol which does not use persistent connections
Date Mon, 21 Jul 2008 18:28:00 GMT
Rest protocol which does not use persistent connections
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                 Key: AMQ-1864
                 URL: https://issues.apache.org/activemq/browse/AMQ-1864
             Project: ActiveMQ
          Issue Type: New Feature
          Components: Transport
    Affects Versions: 5.1.0
         Environment: All currently supported platforms
            Reporter: John Silva


It would be desirable for scalability to offer a REST protocol (or a set of configurations
to the existing rest protocol) which does not use persistent connections.  In the scenario
where there are a large number of clients (on the order of thousands) which send messages
infrequently (on the order of 25-100 per day) to a queue, it is very taxing on network hardware
at the server to maintain a large number of open connections.  In the existing REST protocol,
it appears as though each client uses 2 connections (one for send, one for receive) placing
a hard limit of about 32000 clients (in the real world this limit is much much lower on low-end
networking hardware, perhaps a few hundred).  

Ideally, connections would only be established when a message send is taking place, and perhaps
the connections would be left open for a configurable amount of time (to reduce overhead in
bursty environments).  In order to provide 2 way communication without persistent connections,
it may be that message between a server queue back to a client queue are held and piggybacked
on the response to a message post, but this is normal in reporting evironments where the communication
is primarily one way (guaranteed message delivery to server should be timely, server to client
communication can be delayed).  

Any thoughts, or is this currently supported?

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