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< RabbitMQ mailing list ~ is prefetch count available in erlang rabbitmq client |
| Guest |
 Posted: Thu Sep 17, 2009 6:57 pm |
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Guest
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I would like to limit the number of commands an instance of a worker is
allowed to have that is un-acked at a time, to say one. So that each
worker is allowed to receive, via a subscription, a single message,
completely process it and then ack the message in order to receive the
next one.
Setting the prefetch count to one sounds like that will do what I need,
but I have not found how to do this in the erlang client. Is it there.?
I am using the erlang client that was tagged at the time of the rabbitmq
1.6.0 release.
Thanks,
Mark.
--
Principal Engineer
Cheyenne Software Engineering
mark.geib@echostar.com / 35-215
PGP fingerprint:6DFC 389D 9796 0188 92E5 58F5 34C5 6B47 D091 76FD
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| 0x6e6562 |
| Posted: Mon Sep 21, 2009 1:01 pm |
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Joined: 12 Jul 2007
Posts: 250
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Hey Mark,
On Thu, Sep 17, 2009 at 7:56 PM, Mark <mark.geib@echostar.com> wrote:
> Setting the prefetch count to one sounds like that will do what I need,
> but I have not found how to do this in the erlang client. Is it there.?
Yes, this is a simple RPC command that is exposed in the Erlang
client. Just create a basic.qos record, set the prefetch_count field
and send it via amqp_channel:call/2. There is a test case called
basic_qos_test in the test_util module that illustrates this.
Ben
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| Guest |
| Posted: Mon Sep 21, 2009 1:49 pm |
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Guest
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Folks,
FYI
Chris Duncan aka @bunny_amqp has written a note on prefetch and qos,
in the context of Bunny on Ruby:
http://bunnyamqp.wordpress.com/2009/09/20/bunny-quality-of-service-or-prefetch/
alexis
On Mon, Sep 21, 2009 at 2:00 PM, Ben Hood <0x6e6562@gmail.com> wrote:
> Hey Mark,
>
> On Thu, Sep 17, 2009 at 7:56 PM, Mark <mark.geib@echostar.com> wrote:
>> Setting the prefetch count to one sounds like that will do what I need,
>> but I have not found how to do this in the erlang client. Is it there.?
>
> Yes, this is a simple RPC command that is exposed in the Erlang
> client. Just create a basic.qos record, set the prefetch_count field
> and send it via amqp_channel:call/2. There is a test case called
> basic_qos_test in the test_util module that illustrates this.
>
> Ben
>
> _______________________________________________
> rabbitmq-discuss mailing list
> rabbitmq-discuss@lists.rabbitmq.com
> http://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
>
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| wuji |
| Posted: Sat Aug 18, 2012 7:29 am |
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