[rabbitmq-discuss] Clustering Internals

Alexis Richardson alexis at rabbitmq.com
Fri Mar 25 00:04:32 GMT 2011

"no exactly once" is a variant of the CAP argument.

On Fri, Mar 25, 2011 at 12:00 AM, Jason J. W. Williams
<jasonjwwilliams at gmail.com> wrote:
>> Yes. And this is fundamentally why you can't have exactly-once delivery:
>> either you have fire and forget, in which case msgs can be lost in
>> transit to the broker, or you use transactions or confirms, at which
>> point the tx.commit_ok or the confirm back to the client can be lost
>> thus making the client retransmit messages to a non-failed broker where
>> those msgs actually were received and processed by the broker, it's just
>> the client never received the notification that that had occurred.
>  Thank you Matthew. :) I appreciate your patience with me.
> -J
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