Exchanges just route message based on the exchange type. For some exchange types the routing key will be using to find matching queues. <div><br></div><div>-Alvaro<br><br><div class="gmail_quote">On Wed, Apr 11, 2012 at 2:38 PM, Saima Asif <span dir="ltr"><<a href="mailto:abdullahsaima@yahoo.com">abdullahsaima@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-size:14pt;font-family:times new roman,new york,times,serif"><div style="font-family:'times new roman','new york',times,serif;font-size:14pt">
<span>Dear Emile,</span></div><div style="font-family:'times new roman','new york',times,serif;font-size:14pt"><span><br></span></div><div><span><font size="4">It means user id property, message </font><span style="font-size:19px">durability</span><font size="4">, </font></span><span>Sender-selected distribution is visible to broker, other than routing key. Is there any other data or property broker I means exchanges consider?</span></div>
<div><span><br></span></div><div><span>Thanks for your reply.</span></div><span class="HOEnZb"><font color="#888888"><div style="font-family:'times new roman','new york',times,serif;font-size:14pt"> </div>
<div style="font-family:'times new roman','new york',times,serif;font-size:14pt">Saima Asif<br></div>
</font></span><div style="font-size:14pt;font-family:'times new roman','new york',times,serif"><div class="hm HOEnZb"> </div><div style="font-size:12pt;font-family:'times new roman','new york',times,serif">
<div class="hm HOEnZb"> <div dir="ltr"> <font face="Arial"> <hr size="1"> <b><span style="font-weight:bold">From:</span></b> Emile Joubert <<a href="mailto:emile@rabbitmq.com" target="_blank">emile@rabbitmq.com</a>><br>
<b><span style="font-weight:bold">To:</span></b> Saima Asif <<a href="mailto:abdullahsaima@yahoo.com" target="_blank">abdullahsaima@yahoo.com</a>> <br><b><span style="font-weight:bold">Cc:</span></b> "<a href="mailto:rabbitmq-discuss@lists.rabbitmq.com" target="_blank">rabbitmq-discuss@lists.rabbitmq.com</a>" <<a href="mailto:rabbitmq-discuss@lists.rabbitmq.com" target="_blank">rabbitmq-discuss@lists.rabbitmq.com</a>> <br>
<b><span style="font-weight:bold">Sent:</span></b> Wednesday, 11 April 2012, 13:24<br> <b><span style="font-weight:bold">Subject:</span></b> Re: [rabbitmq-discuss] what are message attributes used by broker in RABBITMQ<br>
</font> </div></div><div class="im"> <br>Hi Saima,<br><br>On 11/04/12 12:54, Saima Asif wrote:<br>> "When publishing a message, producers may specify various /message<br>>
attributes/ (message meta-data). Some of this meta-data may be used by<br>> the broker, however, the rest of it is completely opaque to the broker<br>> and is only used by applications that receive the message. "<br>
> <br>> I am concerned about what message attributes are used by message broker<br>> in AMQP 0-9 model in general? <br><br>The delivery-mode property is used to indicate persistence requirements.<br>See the "Message durability" section in<br>
<a href="http://www.rabbitmq.com/tutorials/tutorial-two-python.html" target="_blank">http://www.rabbitmq.com/tutorials/tutorial-two-python.html</a> for details.<br><br>The user-id property is validated only if it is supplied by the<br>
publisher. See<br><a href="http://www.rabbitmq.com/extensions.html#validated-user-id" target="_blank">http://www.rabbitmq.com/extensions.html#validated-user-id</a> for details.<br><br>Sender-selected distribution makes use of CC and BCC headers in
the<br>message at the time of publication. See<br><a href="http://www.rabbitmq.com/extensions.html#sender-selected-distribution" target="_blank">http://www.rabbitmq.com/extensions.html#sender-selected-distribution</a><br>
for more details:<br><br><br>-Emile<br><br><br><br><br> </div></div> </div> </div></div><br>_______________________________________________<br>
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<br></blockquote></div><br></div>