[rabbitmq-discuss] Round-robin queue failover

Matthias Radestock matthias at lshift.net
Tue Oct 20 06:53:17 BST 2009


Sebastian wrote:
> Now I have come across this [1] blog-post by Ilya Grigorik which  
> says:  "Assign two identically named queues to an exchange and the  
> broker will automatically round-robin the messages". So my  
> understanding is that I could just create identical queues on every  
> node, and the broker will take care of the rest: if one node goes  
> down, messages will just be spread over the other queues/nodes.
> Is this supported by rabbitmq? I've looked around in the amqp specs  
> and documentation, but couldn't find anything related.
> [1] http://www.igvita.com/2009/10/08/advanced-messaging-routing-with-amqp/

That part of the article is wrong. Exchanges route messages to all the 
queues bound with a binding that matches the message. There is no 
round-robining going on; that only happens for delivering messages to 
multiple consumers of the same queue.



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