[rabbitmq-discuss] odd consumer behaviour

Fri May 2 16:55:56 BST 2008

Hi Matthias,

basic.get works great. The jobs with nested dependencies run with no
problems.

The only problem is that Channel basicGet is a non-blocking operation so to
get my test running I'm polling and sleeping for a short amount of time if
I get null. Is there a blocking, non-prefetching, version of basicGet?

Thanks,

Dave

             Matthias                                                      
             Radestock                                                     
             <matthias at lshift.                                          To 
             net>                      David.Corcoran at edftrading.com       
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             rabbitmq-discuss-         rabbitmq-discuss at lists.rabbitmq.com 
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             bitmq.com                 Re: [rabbitmq-discuss] odd consumer 
                                       behaviour                           

             02/05/2008 12:19                                              

David,

David.Corcoran at edftrading.com wrote:
> I think I've hit a problem with prefetching and RabbitMQ. Do you think
this
> might be the case?

As I said in my previous email: "the RpcServer [...] will actually
consume messages from the underlying AMQP queue as fast as it can
without waiting for them to be processed."

So in effect the RpcServer is doing prefetching.

The easiest way to change that is to switch the way the RpcServer gets
the messages from a push to a pull model, i.e. using AMQP's basic.get
rather than basic.consume.

Matthias.

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