Angular and Micro Apps: Maintainable Client Architectures @IJS in Munich, October 2018

Contains:
- npm Packages
- Monorepo
- Micro Apps w/ Hyperlinks
- Micro Apps w/ Shell

# Library Example
https://github.com/manfredsteyer/logger_lib_sample

# Monorepo Example
https://github.com/manfredsteyer/monorepo-demo

# Micro Apps Example
https://github.com/manfredsteyer/Angular_MicroApps_Different_Technologies

# More Blog-Articles & Angular Trainings
https://www.softwarearchitekt.at

Transcript

1. @ManfredSteyer Angular and Micro Apps: Maintainable Client Architectures Manfred Steyer SOFTWAREarchitekt.at ManfredSteyer
2. @ManfredSteyer About me… • Manfred Steyer • SOFTWAREarchitekt.at • Angular Trainings and Consultancy • Google Developer Expert (GDE) Page ▪ 2 Manfred Steyer Public: Vienna, München, Zürich In-House: everywhere http://softwarearchitekt.at/workshops
3. @ManfredSteyer Ever started a project from the scratch? Kick-off After some weeks After some years
4. @ManfredSteyer Idea System
5. @ManfredSteyer Idea µService µService µService
6. @ManfredSteyer Idea µApps µApps µApps
7. @ManfredSteyer Folie▪ 7 Pro Contra
8. @ManfredSteyer Contents 1) Deployment Monolith 2) Hyperlinks 3) Shell 4) How to choose?
9. @ManfredSteyer Deployment Monolith
10. @ManfredSteyer Idea µService µService µService Client Fragment Client Fragment Client Fragment ✓ Easy (Tooling) ✓ One optimized Bundle ✓ Consistent  No separate deployment  Mixing Technologies: Difficult npm Packages ?
11. @ManfredSteyer Create npm-Packages with CLI >= 6 ng new lib-project cd lib-project ng generate library flight-booking-lib ng generate application playground-app ng serve --project playground-app ng build --project flight-booking-lib
12. @ManfredSteyer Project Structure
13. @ManfredSteyer Publish Library cd dist/flight-booking-lib npm publish --registry http://localhost:4873 Alternative: .npmrc file in project root
14. @ManfredSteyer Advantages • Distribution • Versioning • Decoupling between lib authors and app authors
15. @ManfredSteyer Disadvantages • Distribution • Versioning • Decoupling between lib authors and app authors ;-)
16. @ManfredSteyer Disadvantages Distribution • Annoying within project • Prevents gritting further libs Versioning • Old versions • Conflicts • How to force devs to use latest version? Decoupling • What if lib authors == app authors?
17. @ManfredSteyer Monorepo
18. @ManfredSteyer Workspace
19. @ManfredSteyer Advantages Everyone uses the latest versions No version conflicts No burden with distributing libs Creating new libs: Adding folder Experience: Successfully used at Google, Facebook, …
20. @ManfredSteyer Moving back and forth Npm Registry
21. @ManfredSteyer Tooling & Generator https://nrwl.io/nx
22. @ManfredSteyer Visualize Module Structure
23. @ManfredSteyer DEMO
24. @ManfredSteyer Advantages Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project
25. @ManfredSteyer Disadvantages Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project
26. @ManfredSteyer Disadvantages Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project Sub Project Team A Team B Contract
27. @ManfredSteyer Disadvantages One Architecture One Technology Stack Hard to change No self- contained teams One size fits all?
28. @ManfredSteyer Hyperlinks
29. @ManfredSteyer UI Composition w/ Hyperlinks µApp SPA µApp SPA µApp SPA
30. @ManfredSteyer
31. @ManfredSteyer
32. @ManfredSteyer ✓ Simple  Loosing State  Load a new Application
33. @ManfredSteyer 3) Shell
34. @ManfredSteyer µService Providing a (SPA based) Shell µApp µApp µApp Shell ▪ iframes ▪ Bootstrapping several SPAs ▪ Wrap them into Web Components?
35. @ManfredSteyer Angular Elements
36. @ManfredSteyer MicroApp with Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent], bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { }
37. @ManfredSteyer MicroApp with Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent], bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { }
38. @ManfredSteyer MicroApp with Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent], bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { constructor(private injector: Injector) { } ngDoBootstrap() { } }
39. @ManfredSteyer MicroApp with Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent], bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { constructor(private injector: Injector) { } ngDoBootstrap() { const MicroAppElement = createCustomElement( MicroAppComponent, { injector: this.injector }); customElements.define('micro-app', MicroAppElement); } }
40. @ManfredSteyer Loading MicroApps <script src="micro-app.bundle.js"></script> <micro-app></micro-app>
41. @ManfredSteyer DEMO
42. @ManfredSteyer 4) Choosing a Solution
43. @ManfredSteyer Some General Advice Shared state, navigation b/w apps Hyperlinks Legacy Apps or *very very* strong isolation? iframes Separate Deployment/ mix Technologies? Web Components Monolith w/ Libs and Monorepo little much yes no yes no Not a good fit for public web sites
44. @ManfredSteyer Architecture within Micro-Apps Packages Web Components Monorepo Inner Sourcing …
45. @ManfredSteyer Blog > SOFTWAREarchitekt.at • A Software Architect's Approach Towards Using Angular (And SPAs In General) For Microservices Aka Microfrontends • A Lightweight And Solid Approach Towards Micro Frontends (Micro Service Clients) With Angular And/Or Other Frameworks • Micro Apps With Web Components Using Angular Elements
46. @ManfredSteyer Conclusion Monorepo Hyper Links Shell You need to evaluate
47. @ManfredSteyer Beware the Frankenstein- Monster!!
48. @ManfredSteyer Contact and Downloads [mail] manfred.steyer@SOFTWAREarchitekt.at [web] SOFTWAREarchitekt.at [twitter] ManfredSteyer d http://softwarearchitekt.at/workshops Slides & Examples