[rabbitmq-discuss] How to have multiple consumers for a Queue in Ruby

Rajat Vig rajat.vig at gmail.com
Wed Feb 23 08:06:20 GMT 2011

Thanks for the suggestions. I'd the same thing in mind about being able to
start multiple of those processes.

There are 2 different kinds of consumers
1. Get the message and write it to a database or send it out to someplace
Parallelizing this would be easy. Controlling would be more of a problem
here but manageable.

2. There's one large consumer which accepts different kinds of messages.
Like start/stop/abandon a game (which are always singular) and messages for
the game itself which are many.
I don't want to run this one many times since it might just run into
conflicts (though I can't see many currently - it does impose a rigid
discipline in the code).
The alternative that I'm thinking here is to internally re-route by
(generated) random keys and have multiple subscribers in the same
process. Would that work fine?
It not, I think breaking it further to a consumer for all admin messages and
multiple consumers for the game plays would be the way forward but it'll be
a significant refactor.


2011/2/22 Jakub Šťastný <stastny at 101ideas.cz>

> Hi Rajat, could you maybe provide some more info? In general I'd agree with
> Jim, although it depends, there are probably other solutions as well (like
> more queues -> more granular design of the app with more consumers).
> Jakub
> http://www.flickr.com/photos/jakub-stastny
> http://twitter.com/botanicus
> On 22 February 2011 17:43, Rajat Vig <rajat.vig at gmail.com> wrote:
>> Hi
>> We've written an application using the amqp gem with RabbitMQ.
>> Currently the bottleneck we've run into is that if there are too many
>> message incoming then processing the queue takes long.
>> After reading some messages on the list, I think allowing multiple
>> consumers is the way forward.
>> How do I do that? And are there any pitfalls/gotchas?
>> -Rajat
>> _______________________________________________
>> rabbitmq-discuss mailing list
>> rabbitmq-discuss at lists.rabbitmq.com
>> https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
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