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From Nicky Sandhu <>
Subject How to have a highly available and scalable setup using network of brokers?
Date Wed, 20 Jun 2007 18:17:12 GMT

I am in the process of trying to setup a network of brokers for HA behind a
load balancer. The aim is to allow clients to see a virtual broker (which is
really load balanced and with fail over) with a single IP/port. The LBR is
round robin spraying connections to all the masters and the slaves are there
known only to other masters for draining messages if the master fails.

Here's an image of the conceptual architecture. 

Comments/suggestions/alternatives? If this is feasible what does this mean
for durable subscribes as I forsee producers/consumers connecting to any

Has anyone tried such an architecture? Any alternative ways to achieve
HA/scalability which shields the client from configuration changes as we
scale up?

I am attaching a preliminary config files for this setup (network only, no
master/slave yet)
server1.xml , server2.xml 
and server3.xml 
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