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Architectures for Angular: Packages, Monorepos,...

Architectures for Angular: Packages, Monorepos, Microservices

# Library DEMO - npm package with CLI 6
https://github.com/manfredsteyer/cli6-based-lib-demo

# Monorepo DEMO with Nx
https://github.com/manfredsteyer/monorepo-demo

# Micro Apps with Angular Elements DEMO
https://github.com/manfredsteyer/angular-microapp
Have a look at the README.md

# Blog Post about Micro Apps with Angular Elements
http://www.softwarearchitekt.at/post/2018/05/04/microservice-clients-with-web-components-using-angular-elements-dreams-of-the-near-future.aspx

# More Information & Workshops
http://www.softwarearchitekt.at/

Manfred Steyer

June 20, 2018
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  1. @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: Every where, every time http://softwarearchitekt.at/workshops
  2. @ManfredSteyer Create Library with CLI >= 6 npm install -g

    @angular/cli 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 logger-lib
  3. @ManfredSteyer Publishing to npm Registry • Increment version in package.json

    • ng build --project flight-booking-lib • npm publish --registry http://localhost:4873 • npm install --registry http://localhost:4873
  4. @ManfredSteyer Alternatives for setting the Registry • Global: npm set

    registry http://localhost:4873 • Default: registry.npmjs.org • npm get registry • Project: .npmrc in project root
  5. @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?
  6. @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, …
  7. @ManfredSteyer Two Flavors • Like Workspaces/Solutions in different IDEs Project

    Monorepo • E. g. used at Google or Facebook Company-wide Monorepo
  8. @ManfredSteyer Advantages Sub Project Sub Project Sub Project Sub Project

    Sub Project Sub Project Sub Project Sub Project
  9. @ManfredSteyer Disadvantages Sub Project Sub Project Sub Project Sub Project

    Sub Project Sub Project Sub Project Sub Project Team A Team B Contract
  10. @ManfredSteyer Disadvantages More Coordination Blocking Tasks Complex Overall System One

    Architecture One Technology Stack Hard to change One size fits all?
  11. @ManfredSteyer µService Providing a (SPA based) Shell µApp µApp µApp

    Shell ✓ iframes ✓ Web Components ✓ Bootstrapping several SPAs
  12. @ManfredSteyer MicroApp with Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent],

    bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { }
  13. @ManfredSteyer MicroApp with Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent],

    bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { }
  14. @ManfredSteyer MicroApp with Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent],

    bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { constructor(private injector: Injector) { } ngDoBootstrap() { } }
  15. @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); } }
  16. @ManfredSteyer Some General Advice for Macro-Architecture Shared state, navigation b/w

    apps Hyperlinks Legacy Apps or *very very* strong isolation needed? iframes Need separate Deployment/ mix Technologies Web Components "Majestic Monolith" w/ Libs and Monorepo little much yes no yes no Not a good fit when customer facing
  17. @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