Simplifying Microservices & Apps - The art of effortless development - Meetup Eindhoven April 2024.pptx
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Microservices are hot, and the monolith is dead, but navigating the transition can feel like taming chaos. As a colleague of mine once said, "only a genius can control chaos." Since only 0.25% of the population can officially call themselves geniuses, it's better to keep our code simple. In this session, I've got your back, not only showing you the ropes on how to effortlessly craft a well-structured microservice using our open-source library, Easy, but also extending these principles to the front-end. That's right, the patterns we'll explore are not confined to the backend; I will guide you through applying the same structured approach to building resilient, well-organized front-ends as well. This integrated approach aims to demystify both ends of development, backed by my own personal journey towards creating "Easy software".
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Simplifying Microservices & Apps - The art of effortless development - Meetup Eindhoven April 2024.pptx
- 1. Simplifying Microservices & Apps The art of effortless development Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 2. Where it all started Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 3. “Only a genius can control chaos” - Jules H. Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 4. What defines a genius? Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 5. NOW WHAT ?! Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 6. Independent developer / (solution architect) Rob Geurden robgeurden robgeurden@gmail.com iBOOD @robgeurden https://github.com/robgeurd en https://www.robgeurden.com / RG-IT B.V. & T2-Software B.V Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 7. CHARACTERISTICS OF OVERLY COMPLEX CODE & CHAOS Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 8. Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 9. SINGLE RESPONSIBILITY PRINCIPLE A class should have only one reason to change Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 10. LONG FUNCTIONS & BIG CLASSES Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 11. Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 12. “The ideal length of a function is 1” - (Sander) Rob Geurden Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 13. Long functions & big classes Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 14. HIGH CYCLOMATIC COMPLEXITY Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 15. Cyclomatic complexity Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 16. Cyclomatic complexity Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 17. Cyclomatic complexity Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 18. HIGH COUPLING – LOW COHESION Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 19. Low cohesion & high coupling Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 20. Coupling Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 21. Coupling Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 22. SHOTGUN SURGERY Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 23. Shotgun surgery Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 24. WELL WE’LL JUST REFACTOR Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 25. Legacy code dilemma REFACTOR CODE TESTS Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 26. CONSEQUENCES Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 27. SIMPLE CODE Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 28. Simplicity Let’s make software development easy again Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 29. Simple code Easy to read Easy to adjust Shorter is Better Low coupling high cohesion No premature abstraction s Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 30. YAGNI DON’T WRITE CODE YOU THINK YOU MIGHT NEED AT A CERTAIN POINT Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 31. MICROSERVICES Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 32. suite of small services, running in its own process communicating with lightweight mechanisms built around business capabilities independently deployable by fully automated deployment machinery - Fowler Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 33. High cohesion, Low coupling & Open-Closed principle Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 34. MY FIRST MICROSERVICE 2015 Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 35. My first microservice Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 36. Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 37. MISTAKES Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 38. The iteration of simplicity Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 39. INTRODUCING EASY Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 40. OPEN-SOURCE EVOLUTIONARY ARCHITECTURE Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 41. “The easiest framework to build robust and stable microservices in TypeScript on node.js” Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 42. EASY ARCHITECTURE Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 43. STRUCTURE of a EASY Microservice Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 44. DOMAIN: ENTITIES | VALUE OBJECTS | ENUMS DOMAIN: REPOSITORIES | TYPO’S PROCESS: USE CASES SERVICE: RESOURCES | VIEWS DATA: SERVICE, MONGO, SQL GATEWAYS | VIEWS EXT: EXTERNAL DETAILS STRUCTURE of a EASY Microservice Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 45. DEMO Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 46. RECAP Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 47. A CALL TO ARMS Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 48. Q&A Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
- 49. References https://www.robgeurden.com https://speakerdeck.com/robgeurden/simplifying-microservices- an-introduction-to-the-easy-library https://www.linkedin.com/in/robgeurden @robgeurden https://github.com/thisisagile/easy https://github.com/robgeurden Rob Geurden | Simplifying Microservices & Apps | JS Meetup - Eindhoven | April 2024
Editor's Notes
- BACK IN TIME 10 YEARS – 2014 ROSER BORDER SOFTWARE CHECMICAL & PETRO CORNER OFFICE CODE REVIEW COMPLEX EN CHAOTISCH
- PRE-REQ IQ > 140 BELL CURVE > 0.25% > 140 0.2 PERSON IN THIS ROOM
- WE ARENT GENIUSES WE CAN’T CONTROL CHAOS NOR COMPLEXITY NOW WHAT?!?!
- ROB DEV & ARCH WORK WITH SANDER @IBOOD in AMSTERDAM PROGAMMING FOR NEARLY 20 YEARS I HOPE TO INSPIRE YOU TO BUILD EASIER SOFTWARE AND MAYBE TRYOUT OR OPEN SOURCE FRAMEWORK EASY IN THE PROCESS IK HOOP JULLIE MET DEZE TALK TE INSPIREREN EN OP TE ROEPEN OM EENVOUDIGERE CODE TE GAAN SCHRIJVEN. LIEFTST
- IN ORDER TO KNOW WHAT TO AVOID => RECOGNIZE IT WHAT ARE THE TRADEMARKS?!?
- VERTEL VANUIT JEZELF SIMPLE !=SIMPLE
- SO WHY IS A LONG FUNCTION BAD? SOLID – ONE REASON TO CHANGE
- INDICATOR VOOR COMPLEXITEIT
- CLEAN CODE – UNCLE BOB – PRETTY OUTDATED… BUT STILL…. WE’VE ALL DONE IT - POINT
- STOLE IT… START MET RETURN
- WHO KNOWS WHAT THIS IS?
- GRAPH => TEST PATHS IF STATEMENT +1 check CASE +N DO UNTIL +1 (REPEAT OR CONTINUE) IF 2
- Tom mcCabe DEP HOMELAND SECURITY REMEMBER BELOW 10
- MONOLIET
- MICROSOFT
- WHAT DOES HIGH COUPLING LEAD TO
- PARADOX
- SO HOW TO SOLVE THIS??
- YAGNI
- SO HOW DO WE STRUCTURE THIS IF WE CANT DO A MONOLITH??
- Open / close principle
- Worked for a company. *Talk a bit about Roser *25 developers working on the same monolith. *Started of with 2 developers grew over a period of 10 years *10 million line of untested win forms code *We had to make a mobile app… Good luck with that. We figured out that we needed help and asked Sander.
- Basically, a chained microservice pattern done wrong No logging Everything was calling everything – Bad domain composition Single database, was single point of failure – lock from the other application using it caused issues Scaling microservice flooded the connection pool We didn’t mature the pipeline well enough Etc… We made all kinds of mistakes We learned at least that’s what we thought
- Lagen weg Multiple application zuilbaar Meerdere talen en type storage
- Onion shaped architecture
- Domain driven design Hart van de microservices Entiteiten, value objects, enums Aan de buitenkant zit de scheiding tussen je domein en de buiten wereld in easy Meestal een repository of een typo
- Vast kunnen stellen meerendeel van ons de chaos niet beheerst => Wat nu?
- Recap ->Conclusie veel mensen complexity, organisaties te groot, te complex
- Way out -> microservice Easy -> Goed bewezen, kijk er naar en ga het gebruiken!