[rabbitmq-discuss] Database lag and delayed processing of messages

Simon MacMullen simon at rabbitmq.com
Thu Jan 19 17:30:05 GMT 2012

On 19/01/12 17:25, Mark wrote:
> Is there anyway I could configure an exchange/queue/consumer to
> route/deliver/consume a message in the future?
> For example we have run into a situation whereas we produce a message
> for a record that was just inserted into our master database. When our
> consumer tries to act upon this message the record has not be replicated
> to the slaves yet so the message consumption fails. Is there any way we
> can queue up this message in say 5 seconds? Of course we could always
> requeue a failed consumed message but that would lead us to a situation
> where the we could be consume/producing in an infinite loop. How do
> people typically handle this situation?

Not right now.

In the near future we hope to have dead lettering. When that happens you 
could publish to a queue with a 5 second message TTL, and have that 
queue dead letter to the "real" queue.

But not yet I'm afraid.

Cheers, Simon

Simon MacMullen
RabbitMQ, VMware

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