[rabbitmq-discuss] Drawbacks and advantages of "autoack" mode?

Simon MacMullen simon at rabbitmq.com
Fri Apr 15 11:18:33 BST 2011

On 15/04/11 00:10, Alfonso Pantoja wrote:
> Reading your responses I'm wondering if
> a queue consumed by  a client  using explicit-acking could contain
> messages that had been requeued (i meant messages with Delivered flag
> set to true)?

Yes, absolutely.

> If yes, under which circumstances?

If a message was delivered on a connection which then went down before 
the message was acked.

Or someone used basic.reject(true) or basic.recover(true).

Cheers, Simon

Simon MacMullen
Staff Engineer, RabbitMQ
SpringSource, a division of VMware

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