[rabbitmq-discuss] Lose messages between restarts of broker

[Rudi Wirth]

Thanks Emile!

> The advice that Matthew gave applies to unacknowledged message too. If 
> the publisher commits on a transacted channel then persistent messages 
> in a durable queue are guaranteed to be on disk up to the point when 
> they get removed from the queue. This includes any period that messages 
> spend in an unacknowledged state.

I re-tested and confirmed. I had some unack'd messages still on the queue from an earlier producer session/channel that wasn't transactional; in that case, a consumer can't make "non-transactional" existing data transactional which makes sense of course.

Best
-Rudi
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