Micro Frontends - a strive for fully verticalized systems

Agile Tour 2018 (Vienna, Austria)

event: https://agiletourvienna.at/
pptx (with animations): https://drive.google.com/open?id=1POg2y9Q09sW8NTwnhsN3C8lkUsYZ97aS

1. @duffleit micro frontends a strive for fully verticalized systems _
2. @duffleit David Leitner § Technical Expert at Senacor Technologies § Lecturer for post diploma courses at UAS Technikum Wien § I do a couple of things around the tech- community § I‘m writing code
3. @duffleit A definition of micro frontends The idea of micro frontends is to extend the concepts of micro services to the frontend world.
4. @duffleit Sam Newman: § small and focused on one thing § … to be autonomous § That‘s it WHY do we need this? Independent deployments Autonomous operations Technology agnostic Based on standards Parallel Development Small interface surface Microservices
5. @duffleit „Microservices are stated as a contrast system to monoliths.“ The WHERE
6. @duffleit the application the database Big Ball of Mud Brian Foote Joseph Yoder
7. @duffleit database layer the database business layer frontend layer
8. @duffleit database layer the database business layer frontend layer
9. @duffleit payment the database products user shipping
10. @duffleit DB DB DB DB DB DB DB DB DB
11. @duffleit DB DB DB DB DB DB DB DB DB Independent deployments Autonomous operations Technology agnostic Based on standards Parallel Development Small interface surface
12. @duffleit
13. @duffleit But wait, … our microservices have actual human users?
14. @duffleit
15. @duffleit the frontend
16. @duffleit The frontend is … not an implementation detail, it is a critical part of a microservice architecture.
17. @duffleit frontend platform backend platform Independent deployments Autonomous operations Technology agnostic Based on standards Parallel Development Small interface surface a frontend monolith was born a micro frontend TO THE RESCUE ! Independent deployments ! Autonomous operations ! Technology agnostic ! Based on standards ! Parallel Development ! Small interface surface
18. @duffleit A micro frontend? …which one do you want to have?
19. @duffleit ! Hyperlink Integration
20. @duffleit Flavour #1: Hyperlink Integration frontend platform backend platform Catalogue Ordering Payment Shipping hyperlink hyperlink hyperlink
21. @duffleit Flavour #1: Breaking service boundaries frontend platform backend platform Products Ordering Payment Shipping Dash board
22. @duffleit Flavour #1: Backend for Frontend frontend platform backend platform Products Ordering Payment Shipping Dash board BFF BFF BFF BFF BFF samnewman.io/patterns/architectural/bff/
23. @duffleit Flavour #1: Hyperlink Integration Independent deployments Autonomous operations Technology agnostic Parallel Development
24. @duffleit What customers expect: 1 Company === 1 Website I don‘t want to maintain this UI/UX anymore.
25. @duffleit Flavour #1: Reusage Problem frontend platform backend platform Catalogue Ordering Payment Shipping hyperlink hyperlink hyperlink Menu Menu Menu
26. @duffleit Flavour #1: Hyperlink Integration Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX Smooth user interaction Fast loading
27. @duffleit ! Build Time Integration
28. @duffleit Flavour #2: Build Time Integration
29. @duffleit Flavour #2: Build Time Integration BUNDLED FRONTED UI-Shared-Stuff (e.g. SPA-Framework, Components, Routing)
30. @duffleit Flavour #2: Build Time Integration Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX Smooth user interaction Fast loading BUNDLED FRONTED UI-Shared-Stuff (e.g. SPA-Framework, Components)
31. @duffleit ! Transclusion
32. @duffleit Flavour #3 : Transclusion BUNDLED FRONTED UI-Shared-Stuff (e.g. SPA-Framework, Components) The bundling is done by the webserver.
33. @duffleit Flavour #3: Server Side Includes or Edge Side Includes <html> <body> <!--#include virtual="/header" --> <!--#include virtual="/content?route=shop" --> <!--#include virtual="/sidebar?version=new-products" --> <!--#include virtual="/footer" --> </body> </html>
34. @duffleit Flavour #3 : Transclusion Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX* Smooth user interaction Fast loading BUNDLED FRONTED UI-Shared-Stuff (e.g. SPA-Framework, Components)
35. @duffleit ! App Shell Integration
36. @duffleit Flavour #4: App Shell Integration APP SHELL Header Footer The aggregation is done on the client.
37. @duffleit Flavour #4: App Shell Integration Independent deployments Autonomous operations Technology agnostic Parallel Development ! A consistent UI/UX Smooth user interaction Fast loading APP SHELL Header Footer
38. @duffleit ! Metaframework
39. @duffleit /catalogue /checkout APP SHELL Header Footer A question of modularisation Hyperlink Integration App Shell Integration Metaframework
40. @duffleit Flavour #5: Metaframework Route-based modularisation is handled by a Metaframework Metaframework /catalogue /checkout
41. @duffleit • they are implemented with iframes. • or start using web components now. Flavour #5: Technology agnostic
42. @duffleit Flavour #5: Metaframework Metaframework /catalogue /checkout Independent deployments Autonomous operations Technology agnostic Parallel Development ! A consistent UI/UX* Smooth user interaction Fast loading
43. @duffleit „a consistent UI“ ! CDN – for static files " CMS – for static content # A Component Library $ for one framework $ technology agnostic
44. @duffleit Hyperlink Integration Build Time Integration Transclusion App Shell Integration Metaframework the agony of choice
45. @duffleit A consultant‘s favourite words. It depends
46. @duffleit A general decision advice Your application is big?* The need for smooth user interaction Build Time Integration Hyperlink Integration Strongly Independent UI/Domain Parts Complex modularisation needed Transclusion App Shell Integration Meta- Framework * an application is big enough to justify using micro frontends, if slight UI/UX differences between the two most unrelated subpages are acceptable. Yes No
47. @duffleit Compose your perfect MIX Landing Shop Ordering hyperlink hyperlink APP SHELL Header Footer <!–- SSIs --> <!--#include … --> <!--#include … -->
48. @duffleit Key-Takeaways KISS: „think twice if a frontend monolith does not fit your needs and start with a monolith first approach.“
49. @duffleit Key-Takeaways „Consider the frontend as part of your microservice architecture – and solve UI specific problems with UI specific solutions.“
50. @duffleit Key-Takeaways „micro frontends are not a stack or technology – everyone who tells you this, wants to sell you something.“
51. @duffleit Use the right tool for the right job. @duffleit