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Clean Architecture & Domain-Driven Design in NestJS
Build a production-grade e-commerce backend with DDD, CQRS, aggregates, domain events, sagas and ports-and-adapters
5.020 reviews293 learners
- Intermediate
- 12h 18m video
- 81 lectures
- English
- Captions
- Updated 2026
Taught by Michael Guay
- 12h 18m of on-demand video
- 81 lectures across 11 sections
- One-off payment — no subscription
- Lifetime access on web and mobile
- Closed captions (English)
Curriculum
11 sections81 lectures12h 18m total
- Introduction2:07
- Overview1:13
- Requirements1:12
- Clean Architecture13:20
- Ports & Adapters5:04
- GitHub Repository0:08
- Setup2:55
- Shared Domain - Part 110:27
- Shared Domain - Part 210:37
- MongoDB12:46
- Drizzle ORM9:35
- Product Identifier & Sku14:48
- Product Entity12:26
- Product Repository Port6:13
- Drizzle Product Adapter4:25
- Product Schema8:42
- Drizzle Product - Save8:04
- Drizzle Product - Find10:53
- Product Controller & DTOs14:16
- Create Product Command10:43
- Create Product Handler7:42
- Drizzle Kit Migrations6:46
- Create Product Testing3:15
- Get Products12:22
- Application Exceptions19:55
- Domain Exceptions5:38
- Get Product9:56
- Delete Product6:24
- MongoDB Product Repository9:34
- MongoDB Repository Methods7:40
- Dynamic Database Provider8:10
About this course
Most NestJS tutorials stop at controllers calling services calling a database. This course is about what comes after that: how to structure a real backend so business logic lives in one place, is fully unit-testable, and doesn't fall apart when requirements change. Together we build a complete e-commerce system from scratch - products, customers, orders, and payments - as four autonomous bounded contexts, applying Domain-Driven Design and Clean Architecture patterns to every layer. What you'll learn to build: Ri…
Before you start
- Comfortable with TypeScript — classes, interfaces, and async/await
- Basic NestJS familiarity: modules, controllers, and providers
- Node.js installed and a running PostgreSQL instance (a free local install or Docker container is fine)
- No prior DDD or Clean Architecture experience needed — every pattern is taught from first principles
Who it’s for
- Intermediate backend developers who can build CRUD apps and want to design systems that survive years of changing requirements
- NestJS and Node.js developers who've heard of DDD, CQRS, and Clean Architecture but haven't seen them applied to a real, complete project
- Developers preparing for senior/architect roles where domain modeling and system boundaries are the job
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