NestJS TypeORM database connection using forRoot and Async

Опубликовано: 13 Май 2026
на канале: NestJS Simplified
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NestJS TypeORM database connection using forRoot and Async
🚀 Welcome to the ultimate NestJS Session-Based Authentication Series! In this series, we’ll walk you step-by-step through building a full authentication system using NestJS, Passport, TypeORM, Express-Session, and Redis.

🎯 By the end, you’ll be able to:
✅ Authenticate users using sessions (not JWTs).
✅ Store sessions in Redis for performance & scalability.
✅ Protect routes with custom guards.
✅ Manage users with TypeORM and PostgreSQL.

🛠️ What’s Covered:
Passport Local Strategy
express-session + Redis store
User login/logout with sessions
Secure route protection
Accessing current user data
Session serialization & deserialization

✅ Core Concepts

Difference between session-based and token-based (JWT) authentication.
Role of Passport in authentication.
Using Express-Session for session handling.
Storing sessions in Redis for performance and scalability.
Integrating TypeORM for database persistence.

⚙️ Setup & Configuration

Initialize a NestJS project.
Install required packages:

`@nestjs/passport`, `passport`, `passport-local`
`express-session`, `connect-redis`, `ioredis`
`@nestjs/typeorm`, `typeorm`, `pg` (or other DB driver)
Set up `.env` for environment variables.

🧱 Database & User Entity

Configure TypeORM with PostgreSQL (or preferred DB).
Create `User` entity with email, password, etc.
Implement password hashing with `bcrypt`.

🔑 Passport Local Strategy

Implement `LocalStrategy` for username/password login.
Use `validateUser()` in AuthService.
Return session-compatible user object.

🧠 Session Management with Express-Session

Configure Express-Session in main.ts.
Use `connect-redis` for Redis-based session storage.
Add Redis client and connect with NestJS.

🔄 Authentication Flow

Implement login route (`/auth/login`) with Passport.
Handle logout route (`/auth/logout`) using session destruction.
Track login state with session cookies.


🛡️ Authorization & Route Protection

Create a custom `AuthGuard` using `PassportStrategy`.
Protect routes with `@UseGuards()`.
Add `/auth/me` endpoint to get current logged-in user.

🧩 Serialization & Deserialization

Customize `serializeUser` and `deserializeUser`.
Store minimal data in session (e.g., user ID).
Retrieve full user info on each request.

🧽 Security Enhancements

Set `httpOnly`, `secure`, and `sameSite` cookie options.
Add session expiry and Redis TTL.
CORS configuration for cross-origin sessions.
Basic CSRF and production deployment considerations.


🧠 Perfect for intermediate NestJS developers looking to master secure authentication using modern tools!

▬▬▬▬▬▬ 🔗 Links ▬▬▬▬▬▬
► GitHub (Source code): https://github.com/tkssharma/nestjs-c...
► Playlist (nestjs):    • NestJS |  Introduction | Course Overview &...  
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Other Imp Playlist if You Like
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👓 GitHub: https://github.com/tkssharma
📧 Email: [email protected]

#nestjs #passportjs #redis #typeorm #authentication #backenddevelopment