[rabbitmq-discuss] conceptual question

[Matthias Radestock]

Alexis Richardson wrote:
> I am fairly sure that....
> 
> On Fri, Jul 3, 2009 at 7:38 PM, <Ken.Anderson at sungard.com> wrote:
>> Sorry to interject here, but I'm curious as to the answer as well.
>> I'm assuming the question is related to performance - does the
>> message make on hop between nodes, and then get distributed,
> 
> Yes.

Actually, the answer, at present, is 'no', though it used to be 'yes'.
We disabled the optimisation which sends just one copy of the message to
a node on which multiple destination queues reside, since it broke some
of AMQP's ordering guarantees. A fix for that, allowing us to re-enable
the optimisation, is on our todo list.


Matthias.