Sustainable Client Architectures with Micro Apps

Transcript

1. @ManfredSteyer Sustainable Client Architectures with Micro Apps Manfred Steyer SOFTWAREarchitect.io

   ManfredSteyer

2. @ManfredSteyer About me… • Manfred Steyer • SOFTWAREarchitect.io • Angular

   Trainings and Consultancy • Google Developer Expert (GDE) Page ▪ 4 Manfred Steyer Public and In-House http://softwarearchitect.io/workshops

3. @ManfredSteyer ✓ Commodore 64 ✓ 1982 ✓ ~ 1 MHz

   ✓ 64 KB RAM ✓ Disks with 170 KB

4. @ManfredSteyer Version with two cores ;-) Challenge: Resources!

5. @ManfredSteyer Challenges today: Complexity

6. @ManfredSteyer Coordination b/w teams

7. @ManfredSteyer Long Time Maintain- ability Maintain + Extend for 10+

   yrs

8. @ManfredSteyer There are milk products lasting longer than some JavaScript

   frameworks

9. @ManfredSteyer Contents 1) Micro Apps with JavaScript 2) DEMO 3)

   Recipes 4) Evaluation

10. @ManfredSteyer 1) Micro Apps with JavaScript

11. @ManfredSteyer Idea System Team A Team B Framework Architecture Maintainability?

    Hard to change!

12. @ManfredSteyer Idea µService µService µService

13. @ManfredSteyer Idea µApp µApp µApp

14. @ManfredSteyer Folie▪ 16 Pro Contra

15. @ManfredSteyer UI Composition w/ Hyperlinks µApp SPA µApp SPA µApp

    SPA <a href="…>…</a> <a href="…>…</a>

16. @ManfredSteyer ✓ Simple  Loosing State  Load a new

    Application  Consistent Look and Feel

17. @ManfredSteyer

18. @ManfredSteyer Web Components for Shared Widgets?

19. @ManfredSteyer Framework independent Components

20. @ManfredSteyer Can be pollyfilled down to IE11

21. @ManfredSteyer µService Providing a (SPA based) Shell µApp µApp µApp

    Shell ▪ iframes ▪ Bootstrapping several SPAs ▪ Consider Lazy Loading!

22. @ManfredSteyer Common Interface for µApps • Shell should not know

    details of µApp and used Frameworks! • µApp provides events • µApp consumes events • Wrap µApp as Web Component?

23. @ManfredSteyer 2) DEMO

24. @ManfredSteyer µService µApp3 µApp2 µApp1 Shell Web Components for Shell-Architecture

    Shared Widget Shared Widget Shared Widget Web Components for shared Widgets

25. @ManfredSteyer 3) Recipes

26. @ManfredSteyer Communication

27. @ManfredSteyer Communication b/w Web Components <client-a state="appState" message="handle(event)"></client-a> <client-b state="appState"

    message="handle(event)"></client-b> JavaScript in Shell

28. @ManfredSteyer Routing

29. @ManfredSteyer Routing /client-a/this/that /client-b/this/that /client-c/this/that :

30. @ManfredSteyer Routing /client-a/this/that /client-b/this/that /client-c/this/that :

31. @ManfredSteyer Lazy Loading

32. @ManfredSteyer Lazy Loading const content = document.getElementById('content');

33. @ManfredSteyer Lazy Loading const content = document.getElementById('content'); // Add script-Tag

    const script = document.createElement('script'); script.src = [...]; content.appendChild(script);

34. @ManfredSteyer Lazy Loading const content = document.getElementById('content'); // Add script-Tag

    const script = document.createElement('script'); script.src = [...]; content.appendChild(script); // Add Element const element: HTMLElement = document.createElement('client-a'); element.addEventListener('message', (event) => [...]); element.setAttribute('appState', [...]); content.appendChild(element);

35. @ManfredSteyer Bundling

36. @ManfredSteyer Bundles Custom Element 1 Custom Element 2 Custom Element

    3 Libraries: Angular, Bootstrap, … Libraries: Angular, Bootstrap, …

37. @ManfredSteyer Compiling down to JavaScript (more or less) e. g.

    w/ Stencil, Angular Ivy Custom Element 1 Custom Element 2 Custom Element 3

38. @ManfredSteyer Sharing Libs Custom Element 1 Custom Element 2 Custom

    Element 3 Libraries: Angular, Bootstrap, … UMD Drawbacks: Complexity, no isolation

39. @ManfredSteyer 4) Choosing a Solution

40. @ManfredSteyer Some General Advice Shared state, navigation b/w apps Hyperlinks

    Legacy Apps or *very very* strong isolation? iframes Separate Deployment/ mix Technologies? Bootstrap several SPAs Monorepo little much yes no yes no Not a good fit for public web sites Wrap as Web Component?

41. @ManfredSteyer Blog > SOFTWAREarchitect.io • A Software Architect's Approach Towards

    Using Angular (And SPAs In General) For Microservices Aka Microfrontends • Micro Apps With Web Components Using Angular Elements • Angular Elements: A dynamic Dashboard … • Angular, React, Vue.Js And Co. Peacefully United Thanks To Micro Apps And Web Components

42. @ManfredSteyer Conclusion Micro App: Decoupling b/w Teams & Projects Best

    Technology for your current project Web Components + Micro App = ❤️ You need to evaluate!

43. @ManfredSteyer Contact and Downloads [mail] manfred.steyer@SOFTWAREarchitect.io [web] SOFTWAREarchitect.io [twitter] ManfredSteyer

    d Slides & Examples