[rabbitmq-discuss] multiple publishers to the same exchange

Thu Nov 11 15:10:56 GMT 2010

Does this mean that adding a subscriber (queue) will also degrade the
performance:

Say in case we have 1 publisher and 1 subscriber we have 10kHz send
and 10kHz receive throughput.
In case we have 2 publishers then they will be able to send only 5KHz
each?, will the receiver  still be 10kHz?
In case we have 1 10 kHz publisher and two queues, will these queues
be receiving 5kHz each?

Thanks

On Thu, Nov 11, 2010 at 2:50 PM, Matthew Sackman <matthew at rabbitmq.com> wrote:
> On Thu, Nov 11, 2010 at 02:38:25PM +0000, T-zex wrote:
>> We are publishing messages to the same exchange from multiple threads
>> (8 of them), could this be the reason of message receiver slowdown?
>> Is RabbitMq able to handle multiple publishers to the same exchange?
>
> Yes. Each channel is a separate process within Rabbit, and it's the
> channel that does the routing logic, before passing the message to any
> destination queues. Thus all channels can route through the same
> exchanges in parallel.
>
> Matthew
>