[rabbitmq-discuss] publisher confirm ack nack ordering

[Matthias Radestock]

On 29/11/11 21:31, Jeffrey Chen wrote:
> I am wondering if I have this sequence of publishing:
> 1 success
> 2 success
> 3 fail
> 4 success
> 5 fail
> 6 fail
> 7 success
>
> Will the Ack and the Nack come in the sequence order:
> (1, Ack) -> (2, Ack) -> (3, Nack) -> (4, Ack) -> (5, Nack) -> (6, Nack)
> -> (7, Ack)
>
> Or they could come in a different order?

The latter.

Note that you are very unlikely to ever see nacks. Something would have 
to go seriously, and unexpectedly, wrong. Even with just acks though, 
the server may send them out in any order.

Matthias.