<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:14pt"><div><span>Hi,</span></div><div><span></span> </div><div><span>you are very right, I completely agree with your point here. I want to know is there anything other than routing key involved in the message, what an exchange takes to do its routing and forwarding.</span></div><div><span></span> </div><div><span>Is Rabbit MQ 2.8.1 follows the AMQP-1 logic?</span></div><div><span> </span></div><div></div><div> </div><div>Saima Asif<br></div> <div style="font-family: times new roman, new york, times, serif; font-size: 14pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> <div style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; line-height: 0; font-size: 0px;" class="hr"
contentEditable="false" readonly="true"></div> <b><span style="font-weight: bold;">From:</span></b> Simon MacMullen <simon@rabbitmq.com><br> <b><span style="font-weight: bold;">To:</span></b> Saima Asif <abdullahsaima@yahoo.com> <br><b><span style="font-weight: bold;">Cc:</span></b> Emile Joubert <emile@rabbitmq.com> <br> <b><span style="font-weight: bold;">Sent:</span></b> Thursday, 19 April 2012, 10:44<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> <br>On 18/04/12 22:05, Saima Asif wrote:<br>> I am trying to get a general estimate about the latency based on all<br>> message properties<br><br>This is very unlikely to work. Message properties don't have very much to do with it.<br><br>In practice *by far* the biggest impact on latency is message rate - when the broker is near to its maximum message rate, latency heads
for the sky. See the last chart at:<br><br><a href="http://www.rabbitmq.com/blog/2012/04/17/rabbitmq-performance-measurements-part-1/" target="_blank">http://www.rabbitmq.com/blog/2012/04/17/rabbitmq-performance-measurements-part-1/</a><br><br>I would argue that RabbitMQ, like most software, is too complex a system to *model* with anything other than itself. If you want to find out how it will perform in a given context, take measurements.<br><br>Cheers, Simon<br><br>-- Simon MacMullen<br>RabbitMQ, VMware<br><br><br> </div> </div> </div></body></html>