[rabbitmq-discuss] what would cause queue size to immediately go to 0?

Shane shane at digitalsanctum.com
Fri Nov 5 14:52:52 GMT 2010

Thanks for the replies. It looks as though the messages are indeed all
acknowledged but I'm still puzzled as to why since I haven't changed
no_ack or QOS from their defaults.

I'm using Spring AMQP and Java client 2.1.1. Where should I be setting
or checking the settings mentioned?

On Nov 5, 9:56 am, Matthew Sackman <matt... at rabbitmq.com> wrote:
> On Fri, Nov 05, 2010 at 01:33:38PM +0000, Marek Majkowski wrote:
> > Please try using explicit acknowledgments, with no_ack=False
> > and do acks manually using `basic_ack`
> You might also need to use basic.qos to prevent the broker flooding the
> client with msgs. But in general, this behaviour is "fine", provided
> that's what you require in terms of behaviour of the consumers.
> It's always worth looking at messages_ready (i.e. messages in the queue
> which have not been delivered yet) and messages_unacknowledged (i.e.
> messages which have been delivered by the queue for which no
> acknowledgement has been received yet), to see quite what's going on.
> (The "messages" field is the sum of those two).
> Matthew
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