The document provides an overview of message brokers, highlighting their definitions, features, and usage in messaging systems, emphasizing the importance of decoupling applications. It discusses popular message-oriented middleware (MOM) implementations, the AMQP protocol, and specifically details RabbitMQ's functionality and its applications in various organizations. Additionally, it touches on SQL Server Service Broker for messaging within database systems and includes links for further reading.

1. An overview of message
brokers

2. Agenda
• Definitions
• Messaging Systems : purpose & features
• Frameworks
• Use Cases, Demo
• Conclusion

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4. Message Broker
• Component of « MOM », Message Oriented Middleware
• An architectural pattern for message validation,
transformation and routing.
• Mediate communication amongst applications,
minimizing the mutual awareness that application should
have of each other, effectively implementing decoupling
 Integrate applications without enforcing a common
interface

5. Purpose
• Route messages to one or more of many destinations (unicast / multicast)
• Transform messages to an alternative representation (mapping)
• Perform message aggregation, decomposition/recomposition of messages
• Respond to events or errors (“triggering”)
• Provide content and topic-based message routing using the publish–
subscribe pattern.
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6. Characteristics & Features
Producer
(multiple or not)
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•
•
•
•
•
•
push
Broker
pull
Consumer
(multiple or not)
Topology (1-1, 1-N, N-N)
Compression
Timed or permanent persistence
Disconnect detection, error recovery
Acknowleding, ordering, retries
Guaranteed delivery
Combination of features : delivery + ordering : “EOID” exactly once in order
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7. Common Apps
JMS Implementations
Active MQ, Jboss Messaging, Glassfish
AMQP Implementations
Rabbit MQ
Lightweight / non-standardized
ZeroMQ, Finagle, Kafka, Beanstalkd
Commercial MOMs
IBM Websphere MQ, MSMQ (Microsoft)
BEA Weblogic, SAP Netweaver
Enterprise Service Buses
Biztalk, Websphere, Oracle Service Bus
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8. AMQP
•
Some key AMQP messaging protocol requirements
– Internet protocol - like HTTP, TCP –
but ASYNCHRONOUS
– Where to send messages (Routing)
– How to get there (Delivery)
– What goes in must come out (Fidelity)
- Each message is stateless
- Consumers create queues; these
buffer messages for push to consumers
- Queues are stateful, ordered, and can
be persistent, transient, private, shared.
- Exchanges are stateless routing
tables.
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9. RabbitMQ
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Implements AMQP
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Written in Erlang, a functional language known for its ability for concurrent
processing, and backed by Mnesia, Erlang’s powerful persistence database.
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Used by NASA’s Nebula Cloud Computing Platform, VMWare, AT&T
Interactive, Digg, BBC, Nokia and ….
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10. Unibet use of Rabbit MQ
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11. Unibet and RabbitMQ
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12. What about SQL Server Service Broker?
SQL Server Service Broker :
- native support for messaging and queuing applications
- use the Sql Server Database Engine components to communicate between
disparate databases.
- handles the communication paths in the context of transactioned conversation.
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13. Demo
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14. Links
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http://fr.slideshare.net/MaxAlexejev/modern-distributed-messaging-and-rpc
http://msdn.microsoft.com/en-us/library/ms978706.aspx : « broker » pattern
http://blog.pasker.net/2008/06/16/you-might-need-messaging-if/ : why you
might need messaging 
•
http://fr.slideshare.net/somic/introduction-to-amqp-messaging-with-rabbitmq/ :
AMQP functionnalities in detail
http://libfugu.so/blog/2013/09/24/rabbitmq-a-quick-and-dirty-introduction
http://www.rabbitmq.com/resources/RabbitMQ_usecase_StefanNorberg_Unibet
_10xScalabilityAtHalfTheCost.pdf : Rabbit MQ at Unibet, the story of Kevin and his
candy bag
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http://www.codeproject.com/Articles/11795/Introducing-Distributed-Messagingusing-Service-Br : good description of Sql Server Service Broker
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15. 15

16. Find out more
•
On https://techblog.betclicgroup.com/

17. About Betclic
•
•
•
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