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RabbitMQ: Messaging Awesomeness By Dave Gorman Easier scaling to cloud ◦ Subscribers to queue can be on different servers; decoupling application into processing units ◦ Some messages will need more processing power than other messages ◦ Volume of some messages will be much different (1000 decrement balance messages, 2 change of address messages) When designed for messaging: ◦ Faster processing ◦ Easier to code and test Why Messaging Pros ◦ Out of process and durable ◦ Accessible by many technologies ◦ Good visibility to processing bottlenecks select count(*) from messages Cons ◦ Not designed for FIFO processing, slower ◦ Need to poll a table to say “any records yet” ◦ Have to make sure only one message per subscriber Using DBs for Messaging MSMQ only for windows JMS only for java 3rd party enterprise messaging $$$ Messaging Frustration Designed to interoperate with other messaging systems ◦ Leading impl of Advanced Message Queuing Protocol ◦ AMQP standards body with companies like: JPMorgan Cisco Goldman Sachs Proven Platform ◦ Written on top of Erlang’s OTP (Open Telecom Platform) Used in telecom for many years to insure uptime Rated at nine nines (99.9999999%) Written to scale out Supported Clients: Supported Server Platforms: ◦ .Net, Java, Ruby, Python, PHP, Perl, JS… ◦ Windows, Linux (including EC2), Mac OS X RabbitMQ and AMQP <demo basic> Example RabbitMQ Styles <demo with c# and java> Example 2 RabbitMQ Arch 100% Open Source ◦ Not a couple dudes in their garage open source.. Owned by Spring Source and VMWare Commercial Services available Current version is 2.1 (9/25/2010) and releasing often Thriving community About RabbitMQ http://www.rabbitmq.com http://www.amqp.org Dave Gorman [email protected] Questions?