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Mini-Training: Message Brokers


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​Discover the not so new but wonderful world of the Message Brokers, also known as part of the MOM, Message Oriented Middlewares.

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Mini-Training: Message Brokers

  1. 1. An overview of message brokers
  2. 2. Agenda • Definitions • Messaging Systems : purpose & features • Frameworks • Use Cases, Demo • Conclusion
  4. 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. 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. 5
  6. 6. Characteristics & Features Producer (multiple or not) • • • • • • • 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 6
  7. 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 7
  8. 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. 8
  9. 9. RabbitMQ • Implements AMQP • Written in Erlang, a functional language known for its ability for concurrent processing, and backed by Mnesia, Erlang’s powerful persistence database. • Used by NASA’s Nebula Cloud Computing Platform, VMWare, AT&T Interactive, Digg, BBC, Nokia and …. 9
  10. 10. Unibet use of Rabbit MQ 10
  11. 11. Unibet and RabbitMQ 11
  12. 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. 12
  13. 13. Demo 13
  14. 14. Links • • • : « broker » pattern : why you might need messaging  • : AMQP functionnalities in detail _10xScalabilityAtHalfTheCost.pdf : Rabbit MQ at Unibet, the story of Kevin and his candy bag • • • : good description of Sql Server Service Broker 14
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  16. 16. Find out more • On
  17. 17. About Betclic • • • Betclic Everest Group, one of the world leaders in online gaming, has a unique portfolio comprising various complementary international brands: Betclic, Everest Gaming,, Expekt… Active in 100 countries with more than 12 million customers worldwide, the Group is committed to promoting secure and responsible gaming and is a member of several international professional associations including the EGBA (European Gaming and Betting Association) and the ESSA (European Sports Security Association). Through our brands, Betclic Everest Group places expertise, technological know-how and security at the heart of our strategy to deliver an on-line gaming offer attuned to the passion of our players.