Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Sustainable SPA with DDD - The beginning of a w...
Search
Manfred Steyer
PRO
February 06, 2020
Programming
4
730
Sustainable SPA with DDD - The beginning of a wonderful friendship?
Manfred Steyer
PRO
February 06, 2020
Tweet
Share
More Decks by Manfred Steyer
See All by Manfred Steyer
Reactive Thinking with Signals, Resource API, and httpResource @Devm.io Angular 20 Launch Party
manfredsteyer
PRO
0
48
JavaScript as a Crime SceneForensic Analysis
manfredsteyer
PRO
0
33
Modern Angular with Signals and Signal Store:New Rules for Your Architecture @jax2025 in Mainz, Germany
manfredsteyer
PRO
0
66
Premier Disciplin for Micro Frontends Multi Version/ Framework Scenarios
manfredsteyer
PRO
0
39
Your Architecture as a Crime SceneForensic Analysis
manfredsteyer
PRO
0
41
Live Coding: Migrating an Application to Signals
manfredsteyer
PRO
0
120
The Missing Link in Angular’s Signal Story: Resource API and httpResource
manfredsteyer
PRO
0
160
Strategic Design (DDD)for the Frontend @DDD Meetup Stuttgart
manfredsteyer
PRO
0
200
Module Boundaries and Architecture with Forensic Analysis @NxSummit Amsterdam 2025
manfredsteyer
PRO
0
120
Other Decks in Programming
See All in Programming
UMAPをざっくりと理解 / Overview of UMAP
kaityo256
PRO
3
1.6k
AIコーディングの本質は“コード“ではなく“構造“だった / The essence of AI coding is not “code” but "structure
seike460
2
550
プロフェッショナルとしての成長「問題の深掘り」が導く真のスキルアップ / issue-analysis-and-skill-up
minodriven
8
2k
Cloudflare Workersで進めるリモートMCP活用
syumai
12
1.7k
The New Developer Workflow: How AI Transforms Ideas into Code
danielsogl
0
140
オープンソースコントリビュート入門
_katsuma
0
150
iOSアプリで測る!名古屋駅までの 方向と距離
ryunakayama
0
160
CQRS/ESのクラスとシステムフロー ~ RailsでフルスクラッチでCQRSESを組んで みたことから得た学び~
suzukimar
0
140
Browser and UI #2 HTML/ARIA
ken7253
2
190
eBPF超入門「o11yに使える」とは (20250424_eBPF_o11y)
thousanda
1
120
Embracing Ruby magic
vinistock
2
290
クラス設計の手順
akikogoto
0
130
Featured
See All Featured
We Have a Design System, Now What?
morganepeng
52
7.6k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
105
19k
The Straight Up "How To Draw Better" Workshop
denniskardys
233
140k
Become a Pro
speakerdeck
PRO
28
5.3k
Product Roadmaps are Hard
iamctodd
PRO
53
11k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2k
Unsuck your backbone
ammeep
671
58k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
227
22k
Building Applications with DynamoDB
mza
94
6.4k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3k
StorybookのUI Testing Handbookを読んだ
zakiyama
30
5.7k
Making Projects Easy
brettharned
116
6.2k
Transcript
@ManfredSteyer Sustainable SPA with DDD The beginning of a wonderful
friendship? angular-architects.io
What do we need for a good architecture? Experience
@ManfredSteyer Domain Driven Design
@ManfredSteyer How to create sustainable frontend architectures with ideas from
DDD? ?
@ManfredSteyer How to create sustainable frontend architectures with ideas from
DDD? ?
@ManfredSteyer Contents 1) DDD in a Nutshell 2) Monorepos 3)
Monorepos & DDD 4) DDD & Micro Frontends
@ManfredSteyer About me… • Manfred Steyer ANGULARarchitects.io • Angular Trainings
and Consultancy • Google Developer Expert (GDE) • Trusted Collaborator in the Angular Team Page ▪ 8 Manfred Steyer Public: Frankfurt, Munich, Vienna In-House: everywhere http://softwarearchitekt.at/workshops
@ManfredSteyer 1) DDD in a nutshell
@ManfredSteyer Domain Driven Design Strategic Design Tactical Design Decomposing a
System Design Patterns & Practices
@ManfredSteyer Domain Driven Design Strategic Design Tactical Design Decomposing a
System Design Patterns & Practices
@ManfredSteyer This is what Strategic DDD prevents
@ManfredSteyer Example e-Procurement System
@ManfredSteyer Catalog Approval Specification Ordering Example Sub-Domains
@ManfredSteyer 2) Monorepos
@ManfredSteyer Workspace
@ManfredSteyer Advantages No version conflicts No burden with distributing libs
@ManfredSteyer Moving back and forth Npm Registry
@ManfredSteyer https://nrwl.io/nx
@ManfredSteyer Visualize Module Structure
@ManfredSteyer 3) Nx Monorepos and Strategic Design
@ManfredSteyer Catalog Ordering Shared Feature Feature Feature Feature Feature UI
UI UI UI UI UI UI UI UI Domain Domain Domain Domain Domain Domain 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.
@ManfredSteyer Catalog Ordering Shared Feature API Feature Feature Feature Feature
UI UI UI UI UI UI UI UI UI Domain Domain Domain Domain Domain Domain Util Util Util Util Util Util @ManfredSteyer
@ManfredSteyer Catalog Ordering Shared Feature API Feature Feature Feature Feature
UI UI UI UI UI UI UI UI UI Domain Domain Domain Domain Domain Domain Util Util Util Util Util Util @ManfredSteyer
@ManfredSteyer Application Domain Infrastructure Isolate your domain! Domain e. g.
data access Use case specific facades, state management Entities, biz logic
@ManfredSteyer Alternatives to layering • e. g. Hexagonal Architecture, Clean
Architecture • Anyway: We need to restrict access b/w libraries
@ManfredSteyer DEMO
@ManfredSteyer BLOG ANGULARarchitects.io
@ManfredSteyer Finegrained Libraries • Unit of recompilation • Unit of
retesting • Access restrictions • Information Hiding
@ManfredSteyer Facades and State Management
@ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class
ProductFacade { […] }
@ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class
ProductFacade { public products: Product[] = []; […] } State!
@ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class
ProductFacade { public products: Product[] = []; constructor(private productService: ProductService) { } […] }
@ManfredSteyer Facade (Application Service) @Injectable({ providedIn: 'root' }) export class
ProductFacade { public products: Product[] = []; constructor(private productService: ProductService) { } search(category: string): void { […] } }
@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 :-(
@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
@ManfredSteyer App Home Catalog Search RatingFacade ProductFacade SearchFacade Facades Have
State
@ManfredSteyer App Home Catalog Search RatingFacade ProductFacade SearchFacade Facades Have
State
@ManfredSteyer App Home Catalog Search RatingFacade ProductFacade SearchFacade Facades Have
State Store (z. B. Redux/ NGRX) Observable Action
@ManfredSteyer Entities & Aggregates
@ManfredSteyer Entity/ Aggregate Root (OOP) public class BoardingList { private
int id; private int flightId; private List<BoardingListEntry> entries; private boolean completed; // Getters and Setters public void setStatus(int passengerId, BoardingStatus status) { // Complex logic to update status } }
FP und DDD?
@ManfredSteyer Entities (FP) export interface BoardingList { readonly id: number;
readonly flightId: number; readonly entries: BoardingListEntry[]; readonly completed: boolean; } export function updateBoardingStatus( boardingList: BoardingList, passengerId: number, status: BoardingStatus) { // Complex logic to update status }
@ManfredSteyer 4) Micro Frontends
@ManfredSteyer Catalog Ordering Shared Feature Feature Feature Feature Feature …
… … … … … … … … @ManfredSteyer e-Procurement App Deployment Monolith
@ManfredSteyer Catalog Ordering Shared Feature Feature Feature Feature Feature …
… … … … … … … … @ManfredSteyer Catalog App Ordering App Option 1: One App per Domain
@ManfredSteyer Catalog Ordering Shared Feature Feature Feature Feature Feature …
… … … … … … … … @ManfredSteyer Catalog App Ordering App Option 2: One Monorepo per Domain Publish shared libs seperately via npm Different Versions
@ManfredSteyer BLOG ANGULARarchitects.io
Summary • Slicing into sub-domains • Slicing into layers •
Finegrained libraries • Enforce restrictions • Fits to micro frontends
@ManfredSteyer
@ManfredSteyer Contact and Downloads [web] ANGULARarchitects.io [twitter] ManfredSteyer d Slides
& Examples Public: Frankfurt, Munich, Vienna In-House: everywhere http://softwarearchitekt.at/workshops