[rabbitmq-discuss] Reliability and AMQP

Goel, Tanmay tanmay.goel at intel.com
Wed Aug 22 19:22:06 BST 2007

Hi Alexis, Matthias, 

Thanks for that information. I understand that 0-10 is not completely
finished. But, could you point me to the changes/proposal for reliable
messaging? Also, if there is a bullet list to the changes that have been
made/proposed for the 0-10 release, it'd be great if you could send it
to me or tell me where I can find that too. I would like to review the
scope of changes to reliable messaging, among other things like
transaction processing. For example, will the acknowledgement back to
the publisher feature provided for all types of messaging, like P2P,
Pub-sub, etc.



-----Original Message-----
From: alexis.richardson at gmail.com [mailto:alexis.richardson at gmail.com]
On Behalf Of Alexis Richardson
Sent: Tuesday, August 21, 2007 4:44 PM
To: Goel, Tanmay
Cc: Matthias Radestock; rabbitmq-discuss at lists.rabbitmq.com
Subject: Re: [rabbitmq-discuss] Reliability and AMQP


The kind of reliability that you refer to will appear in AMQP 0-10.
We have been working on this or over six months, along with others
from the AMQP Working Group.  It's an important future enhancement to
AMQP, and to RabbitMQ, and one that we are all excited about.

Existing users will be able to continue using 0-8 and 0-9 (which is
almost the same as 0-8), but for those who need 'acks', that will
become a built-in feature of the spec, and of RabbitMQ.

The 0-10 draft is not strictly speaking for general consumption, as
you might expect with a work in progress.  But we welcome commentary
and it is an 'open' spec, so do please let me know if you would like
to get involved.


On 8/21/07, Goel, Tanmay <tanmay.goel at intel.com> wrote:
> Hi,
> So, I'm still trying to understand. There seems to be reliability
missing in
> the protocol. The protocol supports acknowledgements from the consumer
> the queue but there are no acks from the queue/broker back to the
> in any of the schemes (store-forward, pub-sub, etc). I mean, for
> the publisher sends a series of 10K messages to the broker and one
> gets dropped/lost in the network before reaching the broker. The
> will not get an ack and the broker will never know the message was
> to come. Will problems of this sort be taken care of in the later
> of the spec or am I missing reading something?
> Are you guys working with the 0.9 version of the spec or do you have a
> of the 0.10 release since I couldn't find it online?
> Thanks.
> Regards,
> Tanmay
> _______________________________________________
> rabbitmq-discuss mailing list
> rabbitmq-discuss at lists.rabbitmq.com
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Alexis Richardson
+44 20 7617 7339 (UK)
+44 77 9865 2911 (cell)
+1 650 206 2517 (US)

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