[rabbitmq-discuss] Message wait time in a queue

Tue Feb 7 17:05:50 GMT 2012

Thanks Jerry,
Your direction would help us to partially address our problem, but we
are still interested about the wait time to further optimize our
system. We know the time to process and ack a message but we don't
know how long it took to start its processing.

Thanks,

On Feb 7, 11:28 am, Jerry Kuch <jer... at vmware.com> wrote:
> Hi, Rasadoll...
>
> Do you really want to measure the time spent in a queue by the
> message and do something with that information or do you just want
> messages to vanish after they get appropriately stale?  If the
> latter, check out:
>
> http://www.rabbitmq.com/extensions.html
>
> And check out the "Per-Queue Message TTL" session.  It describes
> a RabbitMQ extension to AMQP that lets you declare a queue with
> a new argument, x-message-ttl, that controls how long a message
> published to that queue can live before the broker discards it.
> Messages that have exceeded the TTL set for their queue are
> considered dead, won't be delivered to consumers, and will
> be expunged periodically.
>
> Note that you specify the TTL in *milliseconds*... :-)
>
> Best regards,
> Jerry
>
>
>
>
>
>
>
> ----- Original Message -----
> From: "rasadoll" <rasad... at gmail.com>
> To: rabbitmq-disc... at lists.rabbitmq.com
> Sent: Tuesday, February 7, 2012 8:11:33 AM
> Subject: [rabbitmq-discuss] Message wait time in a queue
>
> Hi,
>
> How can we measure how long a message has been in a queue before it is
> delivered to a consumer? If the message was in a queue for more than a
> certain amount of time we would like to ignore it for example. Our
> message publisher and consumers are on different machines and we
> cannot synchronize their clocks, so the publish time cannot be set by
> the publisher and checked by the consumer. Is there any way to get
> this information from RabbitMQ?
>
> Thanks,
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