[rabbitmq-discuss] Confirm consistent hash exchange behavior

Fri Mar 15 22:37:51 GMT 2013

On 15/03/13 21:56, Alvaro Videla wrote:
> - Create queues 1, 2, .... N
> - Bind queues to the CHX
> - publish the queue names to a queue called "lock" for example.
> [etc]

With that approach the number of consumers must be exactly the same as 
the number of queues; if you have fewer then some messages won't get 
consumed, and if you have more then some consumers won't process any 
messages.

Furthermore, you cannot add/remove queues since that will cause some 
subsequent messages to get routed to different queues than prior to the 
queue addition/removal. They will then be picked up by different consumers.

Matthias.