Introduction to AMQP and RabbitMQ

1. AMQP Messaging
OKCJUG - January 2014 - Ryan Hoegg

2. Messaging?
Notify another system
Work queue
Decouple deployments

3. The Broker
Accepts messages from
publishers
Delivers messages to
consumers

4. Queue
X

5. Queue
X

6. Publish / Subscribe
Consumers can listen
when they want
Many consumers could
get the message

7. Open standard for messaging middleware
Defines a networking protocol
Defines semantics of broker services

8. The Message
Payload (byte[])
Attributes (key/value pairs)

9. Queue

10. Queue

11. Queue
name
attributes
durable
exclusive
auto-delete
arguments

12. Exchange

13. Exchange
name
type
attributes
durable
auto-delete
arguments

14. Binding
Rule used by exchange to route messages to a
queue
Has optional routing key

15. Fanout Exchange
Simple pub/sub
Message routed to every queue bound to the
exchange
Routing key is ignored

16. Direct Exchange
Simple point-to-point
Message routed to queue if routing key matches
binding exactly

17. Topic Exchange
Message routed to queue based on routing-key
match
Use dots within queue names and wildcards in
routing keys

18. Setting things up
Programmable: clients
declare everything
Most servers come with
management tools too,
though

19. Version Confusion
AMQP 0.9.1 widely implemented
AMQP 1.0 approved in October
They are very different

20. Servers
RabbitMQ: http://www.rabbitmq.com/
OpenAMQ: http://www.openamq.org
Apache Qpid: http://qpid.apache.org/

21. AMQP Alternatives
JMS (ActiveMQ is pretty good)
ZeroMQ
Amazon SQS
IronMQ
pubsubhubbub (RESTful)
redis

23. Installation
Provides installer for Windows, OSX, several
linux distributions, solaris
Uses erlang runtime

24. Management Plugin
$ rabbitmq-plugins enable
rabbitmq_management

25. Distributed
Brokers
Clustering
HA Queues
Federation
Shovel