[rabbitmq-discuss] Clustering and scaling

Simon MacMullen simon at rabbitmq.com
Wed Apr 23 09:53:29 BST 2014

On 22/04/2014 20:02, lepolac wrote:
> I'm not talking about the resiliency side of things which is pretty obvious.
> To sum up, can clustering be considered as more than adding resiliency and
> help to scale up, or is exchange federation a better option for this ?

Well, you don't need to have all queues mirrored on all nodes; if you 
have unmirrored queues or those with ha-mode "nodes" or "exactly" then 
you can get more queue-capacity across a cluster. Note also that 
connection and channel processes will take some CPU; distributing that 
around a cluster will also be beneficial.

But federation might be better for your case; the difference is more to 
do with reliable vs unreliable networks than anything else. See 
http://www.rabbitmq.com/distributed.html if you haven't already seen it.

Cheers, Simon

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