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SmartTechTalk : Asynchronous messaging
The document discusses asynchronous messaging as a mode of interaction where multiple parties can exchange information without needing simultaneous participation, making it ideal for scenarios with varying event rates. It outlines key benefits, integration architecture, and various messaging patterns such as publisher/subscriber, direct, and broadcast. Additionally, it contrasts different messaging protocols like JMS, AMQP, and MQTT, highlighting their specific use cases and characteristics.
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SmartTechTalk : Asynchronous messaging
- 2. Asynchronous Messaging How toenhance your Integration Architecture Fulvio Tozzo September 2019
- 3. | A mode ofinteraction between two or more parties in which the exchange of information does not require simultaneous active participation. It is applicable to any scenario where the rate of multiple events exceeds the ability to process them and the consequences of storing and processing the events at a later time are low Definition and Scope Sep 2019Asynchronous Messaging 3
- 4. | SYNCHRONOUS (Phone) • Requiresparticipants’ simultaneous presence • Times out • Volatile • Ignores pace Synchronous vs Asynchronous Communication Sep 2019Asynchronous Messaging 4 ASYNCHRONOUS (eMail) • No “opening hours” • Perpetual conversation • Persistent • Participate at own pace
- 5. | Asynchronous Messaging Pattern Sep2019Asynchronous Messaging 5 Publisher Subscriber B Subscriber A Channel Send Receive Receive
- 6. | • Divide thepublisher and consumer • Store the messages • Route messages • Check and organize messages Features Sep 2019Asynchronous Messaging 6
- 7. | Reference Architecture Sep 2019AsynchronousMessaging 7 External Applications API Internal System 21 Internal System 22 Internal System 11 I Internal Client Application X Internal Client Application Y Internal Client Application Z I External Client Application A External Client Application B External Client Application C Internal applications and services External Services External System 31 External System 32 Identity provider Internal System 12 Integration Identity provider Message Broker
- 8. | Benefits Sep 2019Asynchronous Messaging8 Automation Cost Effectiveness Punctuality Loose Coupling Flexibility Security Efficiency Persistence Reliabilty
- 9. | • An extralayer has to be included in the IT landscape • Response time might be unpredictable • The error handling responsibility is shifted from the consumers to the provider of the service • Extra storage required to persist the data Attention Points XXXX 20XXAsynchronous Messaging 9
- 10. | • Fire &Forget (One-Way) Message Exchange Patterns Sep 2019Asynchronous Messaging 10 • Request/Callback
- 11. | Message Distribution Patterns -Broadcast Sep 2019Asynchronous Messaging 11 Consumer A Consumer B Consumer C Producer Message Broker
- 12. | Message Distribution Patterns -Broadcast Sep 2019Asynchronous Messaging 12 Consumer A Consumer B Consumer C Producer Input Channel Output Channel Output Channel Output Channel Message Broker
- 13. | Message Distribution Patterns -Broadcast Sep 2019Asynchronous Messaging 13 Consumer A Consumer B Consumer C Producer Input Channel Output Channel Output Channel Output Channel Message Broker
- 14. | Scenario – Broadcastan event Sep 2019Asynchronous Messaging 14
- 15. | Scenario – Broadcastan event Sep 2019Asynchronous Messaging 15
- 16. | Scenario – Broadcastan event Sep 2019Asynchronous Messaging 16
- 17. | Message Distribution Patterns -Direct Sep 2019Asynchronous Messaging 17 Consumer A Consumer B Consumer C Producer Message Broker
- 18. | Message Distribution Patterns -Direct Sep 2019Asynchronous Messaging 18 Consumer A Consumer B Consumer C Producer Input Channel Output Channel Output Channel Output Channel Message Broker RoutingID = SubscriberID
- 19. | Message Distribution Patterns -Direct Sep 2019Asynchronous Messaging 19 Consumer A Consumer B Consumer C Producer Input Channel Output Channel Output Channel Output Channel Message Broker
- 20. | Scenario – Datareplication Sep 2019Asynchronous Messaging 20
- 21. | Scenario – Datareplication Sep 2019Asynchronous Messaging 21
- 22. | Scenario – Datareplication Sep 2019Asynchronous Messaging 22
- 23. | Scenario – Datareplication Sep 2019Asynchronous Messaging 23
- 24. | Message Distribution Patterns -Routing Sep 2019Asynchronous Messaging 24 Consumer A Consumer B Consumer C Producer Message Broker
- 25. | Message Distribution Patterns -Routing Sep 2019Asynchronous Messaging 25 Consumer A Consumer B Consumer C Producer Input Channel Output Channel Output Channel Output Channel MyID = SubscriberID Message Broker
- 26. | Message Distribution Patterns -Routing Sep 2019Asynchronous Messaging 26 Consumer A Consumer B Consumer C Producer Input Channel Output Channel Output Channel Output Channel Message Broker
- 27. | Scenario – Orderedworkflow Sep 2019Asynchronous Messaging 27
- 28. | Scenario – Orderedworkflow Sep 2019Asynchronous Messaging 28
- 29. | Scenario – Orderedworkflow Sep 2019Asynchronous Messaging 29
- 30. | Scenario – Orderedworkflow Sep 2019Asynchronous Messaging 30
- 31. | Scenario – Orderedworkflow Sep 2019Asynchronous Messaging 31
- 32. | Scenario – Orderedworkflow Sep 2019Asynchronous Messaging 32
- 33. | Message Distribution Patterns - Publish/Subscribe Sep2019Asynchronous Messaging 33 Consumer A Consumer B Consumer C Producer Message Broker
- 34. | Message Distribution Patterns - Publish/Subscribe Sep2019Asynchronous Messaging 34 Consumer A Consumer B Consumer C Producer Input Channel Output Channel Output Channel Message Broker
- 35. | Message Distribution Patterns - Publish/Subscribe Sep2019Asynchronous Messaging 35 Consumer A Consumer B Consumer C Producer Input Channel Output Channel Output Channel Message Broker SubscriberID = RoutingID SubscriberID = RoutingID
- 36. | Scenario – Updateevent Sep 2019Asynchronous Messaging 36
- 37. | Scenario – Updateevent Sep 2019Asynchronous Messaging 37
- 38. | Scenario – Updateevent Sep 2019Asynchronous Messaging 38
- 39. | • Standard messagingAPI for JAVA platform • Defines the message format (headers, properties and body) • Interoperability is only within Java and JVM languages • Does not worry about the wire level protocol • Supports two messaging models with queues and topics • Supports transactions JMS – Java Message Service Sep 2019Asynchronous Messaging 39
- 40. | • It isa platform independent wire level messaging protocol • Interoperable across multiple languages and platforms • Has four exchange types: direct, fanout, topic, headers • Supports transactions • Meta-data allows to control the message flow • OASIS Standard • AMQP 0.9 and 1.0 are completely different AMQP – Advanced Message Queuing Protocol Sep 2019Asynchronous Messaging 40
- 41. | • Designed tobe used for small dumb devices sending small messages over low bandwidth networks • No long living store • Supports publish-subscribe for topics • Does not allow fragmented messages (hard to send large messages) • No transactional support (only basic acknowledgements) • OASIS Standard MQTT – Message Queuing Telemetry Transport Sep 2019Asynchronous Messaging 41