Microservices architecture is it the right choice to design long-living systems @ Codemotion Webinar
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Microservices all the thing! they say. Nowadays it seems that if architectures are not microservices based they are not worth the name. Is it really true? Do we really need a (micro)services based architecture? We should design our systems with longevity, manutenability, and evolution simplicity in mind. Not hype. Long living systems are our primary goal. We'll analyze most common errors and we'll see how architecture can be a game changer in systems design. Join Mauro in a journey that aims to disclose what it means to build a distributed system based on a (micro)services oriented architecture.
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Microservices architecture is it the right choice to design long-living systems @ Codemotion Webinar
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- 6. microservices architecture is it the right choice to design long-living systems? Mauro Servienti mauroservienti
- 7. All I wanna do when I wake up in the morning is… Rosanna, Toto. Toto IV mauroservienti
- 8. Buy a "Banana Protector" mauroservienti
- 9. Buy a "Banana Protector" mauroservienti
- 10. Shopping Cart Microservice [ list-of ] - Item ID - Price - Quantity - Inventory - Name - Description Shopping Cart mauroservienti
- 13. Products & Shopping Cart Microservices [ list-of ] - Item ID - Price - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price Products mauroservienti
- 14. Products & Shopping Cart Microservices [ list-of ] - Item ID - Price - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price Products copy mauroservienti
- 16. Products & Shopping Cart Microservices [ list-of ] - Item ID - Price - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products mauroservienti
- 17. Products & Shopping Cart Microservices [ list-of ] - Item ID - Price - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products copy copy mauroservienti
- 19. Products & Shopping Cart Microservices [ list-of ] - Item ID - Price - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products mauroservienti
- 20. Products & Shopping Cart Microservices [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products mauroservienti
- 21. Products & Shopping Cart Microservices [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Update XYZ Price mauroservienti
- 23. Price doesn’t feel in the right place - Item ID - Price - Inventory Products mauroservienti
- 25. Suppliers & Products & Shopping Cart [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… - Supplier ID - Item ID - Purchase Price Suppliers Update XYZ Price Are we selling? New Purchase Price mauroservienti
- 27. HTTP all the rage because it’s the microservices way mauroservienti
- 28. Suppliers & Products & Shopping Cart [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… - Supplier ID - Item ID - Purchase Price Suppliers Update XYZ Price Are we selling? New Purchase Price mauroservienti
- 29. “the microservices way” Shopping CartProducts Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Suppliers Update XYZ Price Are we selling? New Purchase Price • Incoming “external” HTTP Post • HTTP Query from Suppliers to Products • HTTP Post from Suppliers to Products • HTTP Query from Products to Shopping Cart • HTTP Post from Products to Shopping Cart mauroservienti
- 30. The snowball effect [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… - Supplier ID - Item ID - Purchase Price Suppliers Update XYZ Price Are we selling? New Purchase Price Ooops... mauroservienti
- 32. The snowball effect: can we rollback? [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… - Supplier ID - Item ID - Purchase Price Suppliers Update XYZ Price Are we selling? New Purchase Price Ooops... mauroservienti
- 34. mauroservienti
- 35. Messaging temporal coupling and distributed transactions mauroservienti
- 36. The snowball effect [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… - Supplier ID - Item ID - Purchase Price Suppliers Update XYZ Price Are we selling? New Purchase Price Ooops... mauroservienti
- 37. The snowball effect [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products - Supplier ID - Item ID - Purchase Price Suppliers New Purchase Price + new price details Business Logic Purchase Price Changed + new price details Business Logic Sell Price Changed MovetoSavedfor… mauroservienti
- 38. The snowball effect [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart + new price details Business Logic Sell Price Changed MovetoSavedfor… Ooops... mauroservienti
- 40. Queries are still a thing: Add item to cart. [ list-of ] - Item ID - Price - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products copy price copy inventory mauroservienti
- 41. Data sharing is still a thing [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart + new price details Business Logic Sell Price Changed MovetoSavedfor… mauroservienti
- 42. We’re flooding the system… Shopping CartProducts Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Is item XYZ in a cart? Swap & Insert Prices Move to Saved for… Is item XYZ in a cart? Update XYZ inventory Update XYZ Price Update XYZ Inventory Over and over, and over, and over… mauroservienti
- 44. User mental model is misleading [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description Shopping Cart - Item ID - Price - Inventory Products - Supplier ID - Item ID - Purchase Price Suppliers mauroservienti
- 45. Let’s focus on the Shopping Cart [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity - Inventory - Name - Description - Etc… Shopping Cart mauroservienti
- 46. Sales shopping cart [ list-of ] - Item ID - Quantity - Inventory - Name - Description - Delivery Est. Shopping Cart - Item ID - Price Sales [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity mauroservienti
- 47. - Item ID - Price Sales [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity Warehouse shopping cart [ list-of ] - Item ID - Quantity - Name - Description - Delivery Est. Shopping Cart [ list-of ] - Cart ID - Item ID - Inventory - Quantity Warehouse - Item ID - Inventory mauroservienti
- 48. Shipping shopping cart [ list-of ] - Item ID - Quantity - Name - Description Shopping Cart [ list-of ] - Cart ID - Item ID - Quantity - Delivery Est. - Item ID - Price Sales [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity [ list-of ] - Cart ID - Item ID - Inventory - Quantity Warehouse - Item ID - Inventory - Item ID - Delivery Type Shipping mauroservienti
- 49. Marketing tends to be stable [ list-of ] - Item ID - Quantity Shopping Cart [ list-of ] - Cart ID - Item ID - Quantity - Delivery Est. - Item ID - Price - Item ID - Name - Description Marketing Sales [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity [ list-of ] - Cart ID - Item ID - Inventory - Quantity Warehouse - Item ID - Inventory - Item ID - Delivery Type Shipping mauroservienti
- 50. Do we need the Shopping Cart at all? [ list-of ] - Item ID - Quantity Shopping Cart [ list-of ] - Cart ID - Item ID - Quantity - Delivery Est. - Item ID - Price - Item ID - Name - Description Marketing Sales [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity [ list-of ] - Cart ID - Item ID - Inventory - Quantity Warehouse - Item ID - Inventory - Item ID - Delivery Type Shipping mauroservienti
- 51. Can Sales be responsible for that concept? [ list-of ] - Cart ID - Item ID - Quantity - Delivery Est. - Item ID - Price - Item ID - Name - Description Marketing Sales Cart ID [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity [ list-of ] - Cart ID - Item ID - Inventory - Quantity Warehouse - Item ID - Inventory - Item ID - Delivery Type Shipping mauroservienti
- 52. We followed the coupling [ list-of ] - Cart ID - Item ID - Quantity - Delivery Est. - Item ID - Price - Item ID - Name - Description Marketing Sales Cart ID [ list-of ] - Item ID - CurrentPrice - LastPrice - Quantity [ list-of ] - Cart ID - Item ID - Inventory - Quantity Warehouse - Item ID - Inventory - Item ID - Delivery Type Shipping mauroservienti
- 53. What a (micro)service is the technical authority for a specific business capability All business rules (& data) reside within the service mauroservienti
- 54. Full Vertical Slices MarketingSales Warehouse Shipping behavior & databehavior & data behavior & databehavior & data mauroservienti
- 55. Full Vertical Slices MarketingSales Warehouse Shipping behavior & databehavior & data behavior & databehavior & data UI & ViewModel Composition UI & ViewModel Composition UI & ViewModel Composition UI & ViewModel Composition mauroservienti
- 56. Full Vertical Slices MarketingSales Warehouse Shipping behavior & databehavior & data behavior & databehavior & data UI & ViewModel Composition UI & ViewModel Composition UI & ViewModel Composition UI & ViewModel Composition Dedicated Technology / FX Dedicated Technology / FX Dedicated Technology / FX Dedicated Technology / FX mauroservienti
- 58. Takeaways • Boundaries are key to success • Do not bring in more technology to solve non- technical problems mauroservienti
- 59. Takeaways • Boundaries are key to success • Mental model can badly influence design • Users/Business analysts tend to think in term of data presentation mauroservienti
- 60. Takeaways • Boundaries are key to success • Mental model can badly influence design • Do not name things prematurely • Premature names stick and drive data aggregation mauroservienti
- 61. Takeaways • Boundaries are key to success • Mental model can badly influence design • Do not name things prematurely • Behaviors define how to aggregate data • Group data that change together and that influence each other • Use anti-requirements techniques to validate data grouping • Follow the coupling mauroservienti
- 62. Takeaways • Boundaries are key to success • Mental model can badly influence design • Do not name things prematurely • Behaviors define how to aggregate data • Use messaging to temporally decouple services mauroservienti
- 64. you don’t need a distributed system first rule of distributed systems mauroservienti
Editor's Notes
- G’day everyone and welcome to this webinar that is part of Codemotion Codemotion is the multichannel platform that helps developers in their professional growth
- Codemotion is the biggest tech conference for developers in EMEA, open to all languages and technologies. Codemotion also organizes many events for developers, such as tech meetups, webinars, hackathons, and training courses
- these are the upcoming Codemotion conferences.
- A few months the Codemotion online platform was launched
- Here is a sneak preview of the Codemotion Platform, where you can find articles, videos of events, interviews, and webinars. Shall we get started?
- How is this thing designed?
- I’m a remote worker I enjoy going to work by bike And I enjoy bananas as lunch breaks Bike riding and bananas in the backpack are not a great idea, so…
- Price cannot unexpectedly change while an item is in the cart
- Price cannot unexpectedly change while an item is in the cart
- distributed monolith
- distributed monolith
- distributed monolith
- At Cart Item Add time
- Deploy time
- Again, not technical, but look at it from a business perspective. What is the responsibility of a service?