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
750
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
Advanced Micro Frontends: Multi Version/ Framework Scenarios @WAD 2025, Berlin
manfredsteyer
PRO
0
25
Modern Angular with Signals and Signal Store:New Rules for Your Architecture @enterJS Advanced Angular Day 2025
manfredsteyer
PRO
0
220
The Missing Link in Angular‘s Signal Story Resource API and httpResource @ngRome 2025
manfredsteyer
PRO
0
87
Your Architecture as a Crime Scene:Forensic Analysis
manfredsteyer
PRO
0
150
Rethinking Data Access: The New httpResource in Angular
manfredsteyer
PRO
0
300
Reactive Thinking with Signals, Resource API, and httpResource @Devm.io Angular 20 Launch Party
manfredsteyer
PRO
0
190
JavaScript as a Crime SceneForensic Analysis
manfredsteyer
PRO
0
93
Modern Angular with Signals and Signal Store:New Rules for Your Architecture @jax2025 in Mainz, Germany
manfredsteyer
PRO
0
170
Premier Disciplin for Micro Frontends Multi Version/ Framework Scenarios
manfredsteyer
PRO
0
100
Other Decks in Programming
See All in Programming
Is Xcode slowly dying out in 2025?
uetyo
1
270
NPOでのDevinの活用
codeforeveryone
0
840
Python型ヒント完全ガイド 初心者でも分かる、現代的で実践的な使い方
mickey_kubo
1
120
テストから始めるAgentic Coding 〜Claude Codeと共に行うTDD〜 / Agentic Coding starts with testing
rkaga
12
4.5k
イベントストーミング図からコードへの変換手順 / Procedure for Converting Event Storming Diagrams to Code
nrslib
2
820
プロダクト志向なエンジニアがもう一歩先の価値を目指すために意識したこと
nealle
0
130
Goで作る、開発・CI環境
sin392
0
230
Startups on Rails in Past, Present and Future–Irina Nazarova, RailsConf 2025
irinanazarova
0
110
Blazing Fast UI Development with Compose Hot Reload (droidcon New York 2025)
zsmb
1
290
AI時代の『改訂新版 良いコード/悪いコードで学ぶ設計入門』 / ai-good-code-bad-code
minodriven
14
4.8k
ソフトウェア品質を数字で捉える技術。事業成長を支えるシステム品質の マネジメント
takuya542
1
13k
Discover Metal 4
rei315
2
140
Featured
See All Featured
Scaling GitHub
holman
460
140k
Rails Girls Zürich Keynote
gr2m
95
14k
The Invisible Side of Design
smashingmag
301
51k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
Balancing Empowerment & Direction
lara
1
430
For a Future-Friendly Web
brad_frost
179
9.8k
A Modern Web Designer's Workflow
chriscoyier
695
190k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
161
15k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2.1k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.4k
Thoughts on Productivity
jonyablonski
69
4.7k
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