[rabbitmq-discuss] what are message attributes used by broker in RABBITMQ

Wed Apr 11 13:38:06 BST 2012

Dear Emile,

It means user id property, message durability, Sender-selected distribution is visible to broker, other than routing key. Is there any other data or property broker I means exchanges consider?

Thanks for your reply.

Saima Asif

________________________________
 From: Emile Joubert <emile at rabbitmq.com>
To: Saima Asif <abdullahsaima at yahoo.com> 
Cc: "rabbitmq-discuss at lists.rabbitmq.com" <rabbitmq-discuss at lists.rabbitmq.com> 
Sent: Wednesday, 11 April 2012, 13:24
Subject: Re: [rabbitmq-discuss] what are message attributes used by broker in RABBITMQ

Hi Saima,

On 11/04/12 12:54, Saima Asif wrote:
> "When publishing a message, producers may specify various /message
> attributes/ (message meta-data). Some of this meta-data may be used by
> the broker, however, the rest of it is completely opaque to the broker
> and is only used by applications that receive the message. "
> 
> I am concerned about what message attributes are used by message broker
> in AMQP 0-9 model in general? 

The delivery-mode property is used to indicate persistence requirements.
See the "Message durability" section in
http://www.rabbitmq.com/tutorials/tutorial-two-python.html for details.

The user-id property is validated only if it is supplied by the
publisher. See
http://www.rabbitmq.com/extensions.html#validated-user-id for details.

Sender-selected distribution makes use of CC and BCC headers in the
message at the time of publication. See
http://www.rabbitmq.com/extensions.html#sender-selected-distribution
for more details:

-Emile
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