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With an open source workflow engine
With an open source workflow engine
Decoupling your Spring boot Microservices With an open source - - PowerPoint PPT Presentation
Decoupling your Spring boot Microservices With an open source - - PowerPoint PPT Presentation
Decoupling your Spring boot Microservices With an open source workflow engine Orchestrating Spring Boot Microservices (In order to get coffee quickly) With an open source workflow engine Grifty Winters n a h e e D l l a i N 4 A
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N i a l l D e e h a n Grifty Winters
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A Classic Distributed System
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Service One Service Two Rest Response
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A Classic Distributed System
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Service One Service Two Service Three Rest Response Rest Response
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Photo by John Ingle
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Photo by John Ingle
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Photo by John Ingle
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Congratulations! You’ve got a coffee
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Who’s next?
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Things to think about?
- Barista takes a break
- Order is taking while
- “We don’t do mochachinos”
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Starbucks does not use two-phase commit
Gregor Hohpe
https://www.enterpriseintegrationpatterns.com/ramblings/18_starbucks.html
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Photo by John Ingle
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Photo by John Ingle
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The System of Kaffee und Kuchen
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Cashier: Takes orders Order Sorter: Can get Cake! Barista: Makes Coffee Order Coffee Ready Coffee Complete
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Demo!
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https://github.com/NPDeehan/kaffee-und-kuchen
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Lets Make some changes to our system
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What needs to change?
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Cashier: Takes orders Order Sorter: Can get Cake! Barista: Makes Coffee Order Coffee Ready Coffee Complete We Need to Hold State
- Retry
- Timeout
- Callback to Cashier
- Versioning
- Error Handling
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Live coding!
https://github.com/NPDeehan/kaffee-und-kuchen
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Lets deal with the issues
- What happens if the barista is taking a quick break?
- Hold State until the barista is back
- What happens if the order is taking too long?
- Let the customer know we’re still working on it
- What happens if the order can’t be completed for business reasons - not technical reasons?
- BPMN Error event!
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Things to think about?
- Barista takes a break
- Order is taking while
- “We don’t do mochachinos”
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Live coding!
https://github.com/NPDeehan/kaffee-und-kuchen
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What did we Achieve
- Better throughput
- Better error handling
- Scale better
- Visualization
- Timer(?)
- Saga(?)
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What needs to change?
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Cashier: Takes orders Order Sorter: Can get Cake! Barista: Makes Coffee Order Coffee Ready Coffee Complete
- Retry
- Timeout
- Callback to Cashier
- Versioning
- Error Handling
We Need to Hold State
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Visualization!
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start.camunda.com
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THE END
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