Multiply Like Rabbits with RabbitMQ

WHO AM I?

• Luis Majano

• Born in El Salvador ------------------>

• Architecture + Software Design

• CEO of Ortus Solutions

• Adobe Community Professional

• Creator of all things Box: ColdBox, ContentBox, CommandBox....

AGENDA

• Traditional RPC Calls• What is Messaging all about• Different Implementations• AMQP Protocol• RabbitMQ• Demo

TRADITIONAL RPC STYLE CALLS

Obj Obj

Obj

• Blocks Requests• Asynchronous, partial solution, still 1-1 relationship• Sender always knows about receiver• Receiver knows about sender

PROBLEMS WITH RPC

How can we decouple knowledge?How can we apply messaging patterns to our apps?

Messaging (EMB)

Producer

Consumer Consumer Consumer

Messaging Bus - Broker

Can be any system or

language

Can be any system or

language

Doesn’t care about consumers

AsynchronousDoes not get a

response

• Producers lack knowledge -> Decouple

• Cross platforms-technologies -> Flexibility

• Event Driven Programming -> Scalability

• Queueing for later delivery• Asynchronous• Load balancing• Hulkyfied services

Usages and Patterns

Direct Messaging

Work Queues

Publish/Subscribe

Topics/Routing

Protocols

JMS AMQP STOMP

AMQP - www.amqp.org

• Advanced Message Queuing Protocol• != JMS• Standard binary protocol• Exchanges• Queuing• Routing• Reliable• Secure• Several Implementations

RabbitMQ

ActiveMQ

Qpid

StormMQ

AMQP Messaging BrokerErlang

Extremely fast, reliable and secureLanguages: c#, erlang, java, python, ruby, node, etc

Accepts and forwards messagesIts like a post box, post office and postman

HOW IT WORKS?Producer

Message(Body+Routing Key)

Exchange (Bindings via Routing Key)

Body = binary, json, anything

stock.prices

stock.run

log.error cluster

Queues are bound to exchanges with patterns

Routing key = Bindings

Queues

• Direct

• Routing key = queue name• No mapping or extra fluff just a passthrough• Similar to JMS

• Topic

• Binding pattern (routing key) is match against the queue name• Not full regex• Ex: log.*, log#• Not like JMS Topics, forget JMS, this is not JMS

• Fanout + More

EXCHANGE TYPES

LOAD BALANCING + ACK

Worker Queue

Consumer

Consumer

Consumer

Messages are round-robin

to each consumer

Consumer need to ack

DEMO TIME

• Java Producer• Java Consumer• CFML Consumer• NodeJS Consumer• JavaScript Consumer• CFML Producer

Q & A

• RabbitMQ In Action Book• http://www.rabbitmq.com• http://tryrabbitmq.com/ • https://github.com/RabbitMQSimulator/RabbitMQSimulator• http://koo.fi/blog/2013/02/18/web-messaging-with-rabbitmq-web-stomp-and-

sockjs/• https://github.com/robharrop/presentations.git