BASTA! Orchestration of microservices
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The document discusses the orchestration of microservices, emphasizing their advantages such as speed, agility, and individual scalability. It addresses challenges like distributed transactions and the need for event-driven communication while highlighting concepts like the saga pattern and event command transformations. Additionally, it introduces modern orchestration tools like Zeebe for enhanced distributed systems management.
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BASTA! Orchestration of microservices
- 1. Orchestration of microservices mail@bernd-ruecker.com With thoughts from http://flowing.io @berndruecker | @martinschimak
- 2. Software is eating the world. Marc Andreessen, Entrepreneur & Investor „
- 3. to pivot | pivoted, pivoted | [Tech]
- 4. If you are not embarrassed by the first version of your product, you’ve launched too late. Reid Hoffman, Co-Founder LinkedIn (and others) „ Photo by joi, available under Creative Commons BY 2.0 license
- 5. Microservices: It is about speed and agility at scale • Small components with clear responsibilities • Isolation • Autonomy • Replaceability • Flexibility • Experimentation • Resilience • Individual scalability Photo by born1945, available under Creative Commons BY 2.0 license
- 6. Example Trip Booking Hotel Car Flight Payment
- 8. Service A Challenge: Synchronous collaboration Call service B Service B The network is unreliable Circuit breaker & fail fast Retry capability & async behavior
- 9. Challenge: Distributed transactions 1. book hotel 2. book car 3. book flight 6. cancel hotel 5. cancel car 4. In case of failure trigger compensations book trip Service A Car ServiceHotel Service Flight Service ACID-Transactions only local in the service contexts Distributed transaction via Saga pattern using compensating activities
- 10. The example in BPMN* * ISO Standard for modeling and execution
- 11. The example in BPMN*
- 12. Routing slip Persistent thing (Entity, Actor, …) State machine How to implement?
- 13. Implement yourself? * * How hard can it be?
- 14. Routing slip Persistent thing (Entity, Actor, …) State machine
- 17. Executable with operational visibility
- 18. Historical data and analysis
- 19. Warum macht eigentlich so ein junges und dynamisches Unternehmen wie ihr so ein alte Männer Thema wie BPM? Ein nicht weiter genannter Chefredakteur „
- 20. BPM done right Developer friendly Flexible & composable BizDevOps Death by properties panel
- 23. Docker Image REST Tomcat Application / Service DB Datasource Camunda Webapps REST Sample architecture
- 24. Docker Image REST Tomcat Trip Booking Service (C#) DB Datasource Camunda Webapps REST Sample architecture
- 25. External tasks and task worker FetchAndLock Complete Handle BPMN Error Handle Failure Camunda Your application
- 26. Live hacking
- 28. More long running requirements
- 29. Payment example
- 31. Asynchronous & reactive Trip Booking Hotel Car Flight Bus
- 32. Example Trip Booking Hotel Car Flight Bus Trip booked Does not know recepient Does not know sender Decentral data management Smart endpoints and dumb pipes Event: Fact that happened in the past, Immutable fact, 0..n recepients Trip booked Customer status changed
- 33. Misconceptions in the microservice community *Picture randomly taken from http://wareflo.com/2016/11/from-apis-to-microservices-workflow-orchestration-and-choreography-across-healthcare-organizations/. Not connected to statements on slide. Orchestration… …introduces single point of failure… …leads to god services… …leads to tight coupling… „
- 34. End-to-end capabilities using event flows? CarHotel FlightTrip booking Trip booked Hotel booked Car booked Flight booked
- 35. End-to-end capabilities using event flows? CarHotel FlightTrip booking Trip booked Hotel booked Car booked Flight booked Goods shipped Book the car first as we just negotiated better cancellation policies …
- 36. Commanding is equally important! CarHotel FlightTrip booking Bus Trip booked Event: Fact, happened in the past, immutable, 0..n recepients Book hotel Command: Intend, 1 recipient. Book car Book flight
- 37. Event command transformation CarHotel FlightTrip booking Bus Book hotel Book car Book flight Trip booked Book Hotel
- 38. Event command transformation CarHotel FlightTrip booking Bus Book hotel Book car Book flight Hotel booked Book car
- 39. Event command transformation CarHotel FlightTrip booking Bus Book hotel Book car Book flight Car booked Book flight
- 40. Event command transformation Car Book car Hotel booked Trip booking Command Something has to happen in the future 1 recipient Event Something has happend in the past 0..n recipients Conciously decide where to do the coupling Transformation Customer Status Changed
- 41. The workflow implements event command transformations Trip booking
- 42. The workflow implements event command transformations Trip booking send command receive event
- 43. The workflow implements event command transformations Trip booking send command receive event Thin integration layer (e.g. Worker, Azure functions, …)
- 44. Distributed orchestration Trip booking Payment Engine Engine
- 45. New kid on the block https://zeebe.io/ Zeebe Broker Your application Binary (MsgPack) Support streaming & batching Client Horiziontally scalable Append only log / event sourcing
- 46. New kid on the block https://zeebe.io/ Zeebe Broker Your application Client
- 48. Thank you!
- 49. Code: https://github.com/berndruecker Slides: https://bernd-ruecker.com Blog: https://blog.bernd-ruecker.com Feedback: https://bernd-ruecker.com/feedback With thoughts from http://flowing.io @berndruecker | @martinschimak
- 50. Images licensed from iStock no attribution required Images licensed under Creative Commons license Photo by joi, available under Creative Commons BY 2.0 license. https://www.flickr.com/photos/joi/402948 7352/ Photo by techcrunch, available under Creative Commons BY 2.0 license. https://www.flickr.com/photos/techcrunc h/29035377473 Photo by born1945, available under Creative Commons BY 2.0 license. https://www.flickr.com/photos/12567713@N0 0/310639290 All icons licensed from Noun Project no attribution required