NestJS: Building Scalable Node.js APIs

What you'll learn

• Scaffold a NestJS app and organize it into modules, controllers and services.
• Use dependency injection, pipes, guards, interceptors and filters in the right order.
• Persist data with TypeORM entities, relations, queries and migrations.
• Configure, log, cache, document and rate-limit an API.
• Test, containerize and deploy a NestJS service.

Syllabus

Module 1: Getting Started

1. Why NestJS?
2. Setup with NestJS CLI
3. Project Structure

Module 2: Foundation

1. Controllers & Routing
2. Routes & Decorators Deep Dive
3. Dependency Injection

Module 3: Core Concepts

1. Providers & Services
2. Modules
3. Middleware
4. Pipes & Validation
5. Guards & Authentication
6. Exception Handling
7. Interceptors
8. Custom Decorators

Module 4: Database & Data

1. Database Integration
2. TypeORM Basics
3. Relationships (One-to-Many, Many-to-Many)
4. Queries & QueryBuilder
5. Migrations

Module 5: Design & Patterns

1. Environment & Configuration
2. Logging
3. Caching

Module 6: Practice & Deployment

1. Testing
2. E2E Testing
3. Performance Optimization
4. Deployment
5. Docker Integration

Module 7: Code Quality

1. Best Practices
2. Interview Questions

Module 8: Tools & Ecosystem

1. NestJS CLI Advanced
2. API Documentation with Swagger

Module 9: Advanced Performance

1. Streaming & Large Responses
2. Rate Limiting

Module 10: Revision & Resources

1. Key Takeaways