NestJS Training Program: Zero to Hero

📚 Complete Learning Documentation

Welcome to the comprehensive NestJS training program! This documentation will guide you from zero knowledge to hero level in building enterprise-grade backend applications.

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🗺️ Navigation

Learning Structure and Plan

Start here to understand the complete learning path, schedule, and methodology.

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📖 Modules by Phase

Phase 1: Foundation (Weeks 1-2)

1. Prerequisites & Setup

   • Environment setup
   • TypeScript fundamentals
   • First NestJS application

2. NestJS Fundamentals

   • Controllers, Services, Modules
   • Dependency Injection
   • Pipes, Guards, Interceptors
   • Exception Filters
   • Middleware

3. PostgreSQL Basics

   • Database design principles
   • SQL fundamentals
   • Relationships
   • Indexes and performance

Phase 2: Core Development (Weeks 3-4)

4. TypeORM Deep Dive

   • Entities and Decorators
   • Repository Pattern
   • Relationships
   • Migrations
   • Query Builder
   • Transactions

5. Advanced NestJS Features ✅

   • Custom Decorators
   • Dynamic Modules
   • Configuration Management
   • Validation

6. Authentication & Authorization ✅

   • JWT Authentication
   • Passport.js
   • Role-Based Access Control

Phase 3: Advanced Features (Weeks 5-6)

7. APIs & Integration ✅

   • RESTful API design
   • GraphQL
   • WebSocket
   • API Documentation

8. File Handling & Media ✅

   • File upload/download
   • Cloud storage integration

9. Caching with Redis ✅

   • Redis setup
   • Caching strategies
   • Session management

10. Background Jobs & Queues ✅

    • Bull Queue
    • Job scheduling
    • Email processing

Phase 4: Testing & Quality (Week 7)

11. Comprehensive Testing ✅

    • Unit Testing
    • Integration Testing
    • E2E Testing

12. Code Quality & Best Practices ✅

    • ESLint & Prettier
    • SOLID principles
    • Design patterns

Phase 5: DevOps & Deployment (Weeks 8-9)

13. Docker Fundamentals ✅

    • Docker basics
    • Dockerfile creation

14. Docker Compose & Local Dev ✅

    • Service orchestration
    • Development environment

15. Kubernetes Basics ✅

    • Kubernetes concepts
    • Deployments and Services

16. Kubernetes Advanced ✅

    • Helm Charts
    • Autoscaling
    • Monitoring

17. CI/CD Pipeline ✅

    • GitHub Actions
    • Automated deployment

Phase 6: Microservices (Weeks 10-11)

18. Microservices Architecture ✅

    • Architecture patterns
    • Service communication

19. NestJS Microservices ✅

    • Transport layers
    • Message patterns

20. Service Communication & API Gateway ✅

    • gRPC
    • Message queues
    • API Gateway

21. Distributed Systems Patterns ✅

    • Saga pattern
    • CQRS
    • Event-driven architecture

Phase 7: Production & Monitoring (Week 12)

22. Observability & Monitoring ✅

    • Logging
    • Metrics
    • APM tools

23. Security & Performance ✅

    • Security best practices
    • Performance optimization

24. Production Deployment ✅

    • Cloud deployment
    • Blue-Green deployment

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🎯 Projects

• Project Setup Guide

  • Main project setup
  • Development workflow
  • Project structure

• Main Project: E-Commerce Platform (Coming Soon)

  • Complete project specification
  • Feature list
  • Architecture design

• Mini Projects Index (Coming Soon)

  • List of all mini projects
  • Quick reference

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🚀 Quick Start

1. Read the Learning Structure to understand the program
2. Start with Prerequisites & Setup
3. Follow modules in order - each builds on the previous
4. Complete mini projects to practice concepts
5. Integrate learnings into the main e-commerce project

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📝 Learning Tips

1. Practice Regularly: Code along with examples
2. Build Mini Projects: Reinforce concepts
3. Apply to Main Project: Use learned skills immediately
4. Review and Refactor: Improve your code over time
5. Ask Questions: Don't hesitate to explore beyond the guide

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🎓 Success Criteria

By the end of this program, you will be able to:

✅ Build scalable NestJS applications
✅ Design complex database schemas with TypeORM
✅ Write comprehensive test suites
✅ Containerize and orchestrate with Docker/Kubernetes
✅ Set up CI/CD pipelines
✅ Design microservices architectures
✅ Optimize with Redis caching
✅ Deploy and monitor production applications

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📚 Additional Resources

• NestJS Official Docs
• TypeORM Docs
• PostgreSQL Docs
• Docker Docs
• Kubernetes Docs

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💡 Contributing

This is a learning resource. Feel free to:

• Take notes
• Add your own examples
• Modify code samples
• Share your learnings

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Good luck on your journey from Zero to Hero! 🚀