Maintainable Architectures with Angular, Monorepos and Strategic DDD

@ManfredSteyer Maintainable Architectures with Angular, Monorepos and Strategic DDD Manfred
Steyer SOFTWAREarchitekt.at ManfredSteyer

@ManfredSteyer "Where does an Architecture come from?" Architecture Requirements

@ManfredSteyer "Where does an Architecture come from?" Architecture Requirements Here
happens a Wonder

@ManfredSteyer Ingredients for an Architecture Experience

@ManfredSteyer Transporting Experience for Architectures BEST PRACTICES PATTERNS METHODOLOGY

@ManfredSteyer Domain Driven Design

@ManfredSteyer How can we improve our frontend architectures with ideas
from DDD?

@ManfredSteyer Contents 1) Strategic Design 101 2) Angular Monorepos 3)
Nx Monorepos and DDD 4) DEMO

@ManfredSteyer About me… • Manfred Steyer SOFTWAREarchitekt.at • Angular Trainings
and Consultancy • Google Developer Expert (GDE) • Trusted Collaborator in the Angular Team Page ▪ 11 Manfred Steyer Public: Vienna, München, Zürich In-House: everywhere http://softwarearchitekt.at/workshops

@ManfredSteyer Strategic Design in a nutshell

@ManfredSteyer Domain Driven Design Strategic Design Tactical Design Decomposing a
System Practices & Patterns

@ManfredSteyer This is what Strategic DDD prevents

@ManfredSteyer Example e-Procurement System

@ManfredSteyer Catalog Approval Specification Ordering Example Sub-Domains

@ManfredSteyer Catalog Approval Employee Manager

@ManfredSteyer Request Product Specify Order Approve Order Send Order Request
Budget Approve Budget Budget Hierarchy Manager Manager Employee Expert Manager Buying Agent Product

@ManfredSteyer Catalog Approval

@ManfredSteyer Catalog Approval Specification Ordering Context Map

@ManfredSteyer Catalog Approval API

@ManfredSteyer Catalog Ordering API ERP ACR

@ManfredSteyer Catalog Approval Calc VAT Calc VAT Seperate Ways

@ManfredSteyer Lots of additional approaches for cross-domain communication …

@ManfredSteyer 2) Monorepos

@ManfredSteyer Workspace

@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

@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, …

@ManfredSteyer Moving back and forth Npm Registry

@ManfredSteyer Tooling & Generator https://nrwl.io/nx

@ManfredSteyer Visualize Module Structure

@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

@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

@ManfredSteyer Nx Monorepos and Strategic Design

@ManfredSteyer Catalog Ordering Shared Feature Feature Feature Feature Feature UI
UI UI UI UI UI UI UI UI Data Data Data Data Data Data Util Util Util Util Util Util Enterprise Monorepo Patterns, Nrwl 2018: https://tinyurl.com/y2jjxld7 @ManfredSteyer

@ManfredSteyer Catalog Ordering Shared Feature API Feature Feature Feature Feature
UI UI UI UI UI UI UI UI UI Data Data Data Data Data Data Util Util Util Util Util Util @ManfredSteyer

@ManfredSteyer Finegrained Libraries • Unit of recompilation and retesting •
Unit of retesting • Access restrictions • Prevent Cycles • Information Hiding • Future replacement for NgModules?

@ManfredSteyer DEMO

@ManfredSteyer Summary Self-contained sub domains Monorepo for slicing w/ libs
Non-strict layering Finegrained libraries Enforce restrictions

@ManfredSteyer Beware the Frankenstein- Monster!!

@ManfredSteyer Contact and Downloads [mail] [email protected] [web] SOFTWAREarchitekt.at [twitter] ManfredSteyer
d Slides & Examples Public: Frankfurt, Vienna, München, Stuttgart In-House: everywhere http://softwarearchitekt.at/workshops

Maintainable Architectures with Angular, Monorepos and Strategic DDD

Maintainable Architectures with Angular, Monorepos and Strategic DDD

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