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From Gary Tully <>
Subject Re: Broker Networks and duplicate message delivery
Date Mon, 19 Dec 2011 17:29:12 GMT
the 'forward' bit of store and forward is actually, 'consume and
forward', so the message is removed from A and forwarded to B, it only
exists in one location at a time. So for a Queue, it will be consumed
from A or B but not both.

On 15 December 2011 18:47, techbuddy <> wrote:
> Hi,
> As I understand,broker networks could be configured with bidirectional
> message push for cross-geographic fail over of message processing through
> the store-and-forward method. So, if broker A and B form a simple 2-member
> network,possibly over a WAN (spanning multiple geographies), with
> bidirectional push enabled, how do we ensure that a given message M sent to
> A or B is processed only once? If the message is originally published to A,
> it'd first be stored there and then forwarded to B.Now, assuming both A and
> B have consumers attached to them, M would get delivered and hence processed
> twice. How do I prevent this duplicate processing?Am I missing anything
> here?
> -techB
> --
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