Mastering NestJS – A Comprehensive Hands-on Course

Master modern backend development with NestJS in this comprehensive Hindi course. Whether you're a beginner or an experienced developer, this course will take you from zero to hero by covering everything from the basics to advanced enterprise-level concepts.

You'll learn how to build scalable, secure, and maintainable server-side applications using TypeScript and NestJS, a powerful Node.js framework inspired by Angular. We’ll explore topics like REST APIs, GraphQL, authentication, database integration (PostgreSQL, MongoDB, TypeORM, Prisma), monorepo architecture, microservices, event-driven systems, testing, cloud deployments, and more.

By the end of this course, you'll be confident enough to develop and deploy production-grade backend applications using best practices in modern development workflows.

Section 1: Introduction - NestJS Zero to Hero

• Lecture 1: NestJS Zero to Hero - Modern backend Development

• Lecture 2: Setting up Your System and prerequisite for this Course

• Lecture 3: Course Agenda & Outline

Section 2: Getting Started with NestJS

• Lecture 4: NestJS CLI Starter: Exploring the Generated Code

• Lecture 5: System Setup and Node.js Installation for NestJS Development

• Lecture 6: Why NestJS? – Introduction to NestJS (Preview enabled)

• Lecture 7: NestJS vs Express: Key Differences in API Development

• Lecture 8: Using NestJS CLI & Organize Your Code with Modular Structure

Section 3: NestJS Basic Fundamentals with Simple CRUD

• Lecture 9: Baseline Nestjs Code for Building APIs

• Lecture 10: Building REST API CRUD Operation with In Memory Data

• Lecture 11: NestJS Controller and Service Basic Fundamentals

Section 4: NestJS CLI and NestJS Core Building Blocks

• Lecture 12: Understanding the NestJS Request Lifecycle Flow

• Lecture 13: Kickstarting Your NestJS App with the CLI (Preview enabled)

• Lecture 14: NestJS Middleware and Auth Guard with Core Components

Section 5: NestJS Dependency Injection and Building Blocks

• Lecture 15: NestJS API Documentation Using Swagger

Course Modules (Extended Learning)

Module 1: NestJS Fundamentals and Core Concepts

• Introduction to NestJS and its architecture

• Basic Fundamentals of Nestjs (core concepts)

• Setting up a NestJS project with TypeScript

• Creating RESTful APIs and GraphQL endpoints

• Implementing authentication (JWT, OAuth, Passport.js)

• Building end to end REST API services

• Setting up a NestJS project with Monorepo

• Database integration with TypeORM & Prisma and Mongoose

• Setting up a NestJS project with Testing

• Understanding NestJS Microservices

• Building Microservices and event-driven applications

• Unit & Integration Testing in NestJS

• CI/CD and deploying NestJS apps to the cloud

Module 2: API Development - REST and GraphQL

• Creating RESTful APIs with NestJS

• Building GraphQL APIs using code-first and schema-first approaches

• API versioning and best practices

• API documentation using Swagger

• Handling GraphQL resolvers and decorators

• Integrating GraphQL with authentication and guards

Module 3: Authentication and Authorization

• Authentication with Passport.js (JWT, Local, OAuth2 strategies)

• Implementing cookie-based authentication (HTTP-only cookies)

• Session-based authentication flow

• Role-based access control (RBAC)

• Token-based authentication and refresh strategies

• Security best practices (CORS, helmet, rate limiting, CSRF protection)

Module 4: Database Integration and File Handling

• Connecting PostgreSQL using TypeORM

• Using Prisma ORM for modern data modeling

• Integrating MongoDB with Mongoose

• File upload handling with Multer and working with static assets

• Exception filters, interceptors, and custom decorators

Module 5: NestJS Microservices and Architecture

• Understanding NestJS microservices architecture

• Building microservices using TCP, Redis, NATS, RabbitMQ

• Using message patterns and transporters

• Communication using EventEmitter and custom event buses

• Scalable job queues with BullMQ

• Deploying and testing distributed services

Module 6: NestJS GraphQL Deep Dive

• Setting up GraphQL modules and resolvers

• Working with GraphQL decorators and schemas

• Using Apollo Server and code-first approach

• Handling GraphQL mutations and queries with DTOs

• Integrating GraphQL with databases (TypeORM/Prisma)

• Testing GraphQL queries and mutations

Module 7: NestJS Testing Strategies

• Unit testing with Jest and mocking techniques

• Writing integration tests with Supertest

• Testing GraphQL APIs and authentication guards

• Testing modules and controllers independently

• Creating reusable testing utilities

• Best practices for test organization and coverage

Module 8: DevOps, CI/CD, and Cloud Deployment

• Setting up environment variables and configuration modules

• Logging and monitoring with Winston and Morgan

• CI/CD pipeline setup with GitHub Actions or GitLab CI

• Dockerizing your NestJS app for production

• Deploying to AWS Lambda using Serverless Framework

• Deploying on EC2, ECS, and Kubernetes

• Creating and publishing custom NestJS packages