Sustainable Architectures with Angular, Monorepos, and DDD @ngbe 2019 in Ghent, Belgium

@ManfredSteyer Sustainable Architectures with Angular, Monorepos, and DDD angular-architects.io

@ManfredSteyer What do we need for a good architecture ?
Experience

@ManfredSteyer Sharing Experience for Architectures BEST PRACTICES PATTERNS METHODOLOGY

@ManfredSteyer Domain Driven Design

@ManfredSteyer How can create sustainable frontend architectures with ideas from
DDD?

@ManfredSteyer Contents 1) Strategic DDD 2) Angular Monorepos 3) Nx
Monorepos and DDD

@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 DDD in a nutshell

@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 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 Bounded Context Ubiquitous Language

@ManfredSteyer Catalog Approval Specification Ordering Context Map

@ManfredSteyer Approval Specification Context Map Catalog Catalog Shared Kernel

@ManfredSteyer Catalog Approval API

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

@ManfredSteyer 2) Monorepos

@ManfredSteyer Workspace

@ManfredSteyer Advantages No version conflicts No burden with distributing and
versioning libs

@ManfredSteyer Moving back and forth Npm Registry

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

@ManfredSteyer Visualize Module Structure

@ManfredSteyer 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. 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 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 Free eBook https://leanpub.com/enterprise-angular

@ManfredSteyer DDD and Micro Frontends? Short outlook

@ManfredSteyer Catalog Ordering Shared Feature Feature Feature Feature Feature …
… … … … … … … … @ManfredSteyer e-Procurement App Deployment Monolith

… … … … … … … … @ManfredSteyer Catalog App Ordering App Option 1: One App per Domain

… … … … … … … … @ManfredSteyer Catalog App Ordering App Option 2: One Monorepo per Domain Publish shared libs seperately via npm

@ManfredSteyer Summary Slicing into sub-domains Slicing into layers Relaxed layering
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

Sustainable Architectures with Angular, Monorep...

Sustainable Architectures with Angular, Monorepos, and DDD @ngbe 2019 in Ghent, Belgium

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