Sustainable SPA with DDD The Beginning of a Wonderful Friendship? @SAA2021

# Example
https://github.com/manfredsteyer/nx-angular-demo.git

# Free eBook on Angular Architectures
https://www.angulararchitects.io/book

Transcript

1. @ManfredSteyer
2. @ManfredSteyer
3. @ManfredSteyer
4. @ManfredSteyer
5. @ManfredSteyer
6. @ManfredSteyer
7. @ManfredSteyer
8. @ManfredSteyer
9. @ManfredSteyer Manfred Steyer
10. @ManfredSteyer
11. @ManfredSteyer Strategic Design Tactical Design
12. @ManfredSteyer Strategic Design Tactical Design
13. @ManfredSteyer
14. @ManfredSteyer Example Flight System Flight System
15. @ManfredSteyer Booking Booking Check-in Check-in Boarding Boarding Luggage Luggage Example Sub-Domains
16. @ManfredSteyer
17. @ManfredSteyer Monorepo Structure
18. @ManfredSteyer Advantages No version conflicts No burden with distributing libs
19. @ManfredSteyer Moving Back and Forth Npm Registry
20. @ManfredSteyer Creating a Workspace npm install -g @angular/cli ng new workspace cd workspace ng generate app my-app ng generate lib my-lib ng serve --project my-app ng build --project my-app
21. @ManfredSteyer https://nrwl.io/nx
22. @ManfredSteyer Visualize Module Structure
23. @ManfredSteyer Creating a Workspace npm install -g @angular/cli ng new workspace cd workspace ng generate app my-app ng generate lib my-lib ng serve --project my-app ng build --project my-app
24. @ManfredSteyer Creating a Workspace npm install -g @angular/cli npm init nx-workspace myworkspace cd workspace ng generate app my-app ng generate lib my-lib ng serve --project my-app ng build --project my-app
25. @ManfredSteyer
26. @ManfredSteyer Booking Booking Boarding Boarding Shared Shared Feature Feature Feature Feature Feature Feature Feature Feature Feature Feature UI UI UI UI UI UI UI UI UI UI UI UI UI UI UI UI UI UI Domain Domain Domain Domain Domain Domain Domain Domain Domain Domain Domain Domain Util Util Util Util Util Util Util Util Util Util Util Util Enterprise Monorepo Patterns, Nrwl 2018: https://tinyurl.com/y2jjxld7 @ManfredSteyer Shared Kernel (if really needed) & other libs Smart Comp. Dumb Comp.
27. @ManfredSteyer Booking Booking Boarding Boarding Shared Shared Feature Feature API API Feature Feature Feature Feature Feature Feature Feature Feature UI UI UI UI UI UI UI UI UI UI UI UI UI UI UI UI UI UI Domain Domain Domain Domain Domain Domain Domain Domain Domain Domain Domain Domain Util Util Util Util Util Util Util Util Util Util Util Util @ManfredSteyer
28. @ManfredSteyer Application Domain Infrastructure Application Domain Infrastructure Isolate your domain! Domain Domain e. g. data access Use case specific facades, state management Entities, biz logic
29. @ManfredSteyer Alternatives to layering • e. g. Hexagonal Architecture, Clean Architecture • Anyway: We need to restrict access b/w libraries
30. @ManfredSteyer DEMO
31. @ManfredSteyer
32. @ManfredSteyer Options File System Nx Cloud Custom Cache
33. @ManfredSteyer Configuration (nx.json) "tasksRunnerOptions": { "default": { "runner": "@nrwl/workspace/tasks-runners/default", […] } },
34. @ManfredSteyer Configuration (nx.json) "tasksRunnerOptions": { "default": { "runner": "@nrwl/workspace/tasks-runners/default", "options": { "cacheableOperations": ["build", "lint", "test", "e2e"], […] } } },
35. @ManfredSteyer Using nx build app-or-lib --with-deps
36. @ManfredSteyer Prerequisite for Incremental Builds ng g lib lib-name --buildable
37. @ManfredSteyer Also Test and Lint-Results Can be Cached nx build app-or-lib --with-deps nx lint app-or-lib --with-deps nx test app-or-lib --with-deps nx e2e app-or-lib --with-deps
38. @ManfredSteyer DEMO
39. @ManfredSteyer • • • •
40. @ManfredSteyer
41. @ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class ProductFacade { […] }
42. @ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class ProductFacade { public products: Product[] = []; […] } State!
43. @ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class ProductFacade { public products: Product[] = []; constructor(private productService: ProductService) { } […] }
44. @ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class ProductFacade { public products: Product[] = []; constructor(private productService: ProductService) { } search(category: string): void { […] } }
45. @ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class ProductFacade { public products: Product[] = []; constructor(private productService: ProductService) { } search(category: string): void { […] } } SPA has to pull :-(
46. @ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class ProductFacade { public products: Observable<Product[]>; constructor(private productService: ProductService) { } search(category: string): void { […] } } Also key for messaging
47. @ManfredSteyer App Home Catalog Search RatingFacade ProductFacade SearchFacade Facades Have State
48. @ManfredSteyer App Home Catalog Search RatingFacade ProductFacade SearchFacade Facades Have State
49. @ManfredSteyer App Home Catalog Search RatingFacade ProductFacade SearchFacade Facades Have State Store (z. B. Redux/ NGRX) Observable Action
50. @ManfredSteyer DEMO
51. @ManfredSteyer
52. @ManfredSteyer Booking App Booking App Check-in App Check-in App Boarding App Boarding App Luggage App Luggage App Microfrontends
53. @ManfredSteyer
54. @ManfredSteyer Booking Booking Boarding Boarding Shared Shared Feature Feature Feature Feature Feature Feature Feature Feature Feature Feature … … … … … … … … … … … … … … … … … … @ManfredSteyer Flight App Flight App Deployment Monolith
55. @ManfredSteyer Booking Booking Boarding Boarding Shared Shared Feature Feature Feature Feature Feature Feature Feature Feature Feature Feature … … … … … … … … … … … … … … … … … … Booking App Booking App Boarding App Boarding App Microfrontends
56. @ManfredSteyer Booking Booking Boarding Boarding Shared Shared Feature Feature Feature Feature Feature Feature Feature Feature Feature Feature … … … … … … … … … … … … … … … … … … Booking App Booking App Boarding App Boarding App Option 1: One App per Domain Monorepo
57. @ManfredSteyer Booking Booking Boarding Boarding Shared Shared Feature Feature Feature Feature Feature Feature Feature Feature Feature Feature … … … … … … … … … … … … … … … … … … Booking App Booking App Boarding App Boarding App Option 2: One Monorepo per Domain Publish shared libs seperately via npm Repository n Repository 2 Repository 1
58. @ManfredSteyer Free eBook ANGULARarchitects.io/book
59. • • • • •
61. @ManfredSteyer d Slides & Examples Public: Frankfurt, Munich, Vienna In-House: everywhere http://softwarearchitekt.at/workshops