[rabbitmq-discuss] Message delivered to only one consumer in a topic exchange

Aaron Westendorf aaron at agoragames.com
Wed Apr 27 13:51:14 BST 2011


Do you have individual queues for all of your consumers? If you want
multiple consumers to receive the message, they must have their own

I've had to explain this scenario before, and the approach I've found
most successful is to stress that the queue is the ultimate
destination of a message. From there, you are welcome to consume it,
but the queue is the final resting place of a message. So if you want
multiple consumers to process it, they each must have a queue which
can receive a copy of the message.


On Tue, Apr 26, 2011 at 7:18 PM, Garrett Smith <g at rre.tt> wrote:
> I need to spend some time collecting more specific data, but I wanted
> to post here earlier than later in case it's obvious to someone.
> I'm sending messages to a topic exchange from an Erlang client. The
> message is being delivered to only one consumer (of several) that has
> bindings for the message.
> I don't see this behavior when sending the same message payload using
> the qpid Python client.
> I *believe* I'm also seeing this behavior (message only being
> delivered to one consumer) when using the RabbitMQ Java client.
> The broker is v2.2.0. The clients are a mishmash of earlier version.
> Sorry, I know there's probably a *lot* more info needed here, but I
> wanted to start with a simple description, in case I can get lucky :)
> Garrett
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Aaron Westendorf
Senior Software Engineer
Agora Games
359 Broadway
Troy, NY 12180
Phone: 518.268.1000
aaron at agoragames.com

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