[rabbitmq-discuss] Implementing User Messaging Using RabbitMQ

Fri Jan 25 05:54:54 GMT 2013

On 25/01/13 02:48, Jerry Kuch wrote:
>> Issue 1: How to support groups?  The messaging service worker could
>> resolve the group to a list of users and post the message multiple
>> times (once for each user/routing key)-- but this would not scale very
>> well.
> [discussion of various options]

One option that wasn't mentioned is to use 
http://www.rabbitmq.com/sender-selected.html, i.e. send a single message 
with all group members as recipients.

That's the escape hatch if, for whatever reason, group membership cannot 
be represented directly in the routing topology.

Matthias.