<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Do you want failover or clustering (or both)?<div><br></div><div>I use both. I have haproxy as a TCP proxy that sits in front of the RabbitMQ servers and acts as a failover and load balancer mechanism.</div><div><br></div><div>Behind the proxy are clustered RabbitMQ instances, which means they use the standard RabbitMQ clustering mechanism and have the same queues, exchanges, and whatnot on each box.</div><div><br></div><div>I then use Spring AMQP to connect to the *proxy*, who decides which of the RabbitMQ instances I actually get connected to.</div><div><br></div><div><div><br>Jon Brisbin</div><div>Portal Webmaster</div><div>NPC International, Inc.</div><br></div><div><br></div><div><div><div>On Oct 29, 2010, at 1:27 AM, Kshitiz Garg wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Hi,<br><br>I have just started working with RabbitMQ for my cloud messaging/eventing application. The proof of concept worked well with rabbitMQ and Spring AMQP. Now, I want to start preparing for scalability. <br>I am able to setup a rabbitMQ cluster with 2 rabbitMQs installed on 2 separate machines. Now I want to know what is achieved by "clustering" in terms of rabbitMQ. <br>
<br>My spring amqp template has been given a connection Factory like this:<br><b><br> <!-- RabbitMQ configurations --><br> <!-- Define a connectionFactory --><br> <bean id="connectionFactory"<br>
class="org.springframework.amqp.rabbit.connection.SingleConnectionFactory"><br> <constructor-arg value="localhost" /><br> <property name="username" value="guest" /><br>
<property name="password" value="guest" /><br> </bean><br><br> <!-- Configure the admin class --><br> <bean id="amqpAdmin" class="org.springframework.amqp.rabbit.core.RabbitAdmin"><br>
<constructor-arg ref="connectionFactory" /><br> </bean></b><br><br>Here I have specified <b>localhost</b>, so now, if I send a amqp message through rabbitMQ and this localhost broker is not up, will that message go through its cluster node automatically ?<br>
<br>If that's the case, then what do we mean by high availability?<br><br>Thanks,<br>Kshitiz Garg<br><br><br><br><br>
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