https://github.com/nxtninja/sso-auth-monorepo

SSO Auth is a secure and efficient Single Sign-On (SSO) authentication system built with Fastify, Next.js, PostgreSQL, and Prisma. It supports JWT-based authentication, protected routes, and seamless login across multiple frontends
https://github.com/nxtninja/sso-auth-monorepo

fastify nextjs turborepo

Last synced: 7 days ago
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SSO Auth is a secure and efficient Single Sign-On (SSO) authentication system built with Fastify, Next.js, PostgreSQL, and Prisma. It supports JWT-based authentication, protected routes, and seamless login across multiple frontends

• Host: GitHub
• URL: https://github.com/nxtninja/sso-auth-monorepo
• Owner: NxtNinja
• Created: 2025-01-27T09:18:58.000Z (11 days ago)
• Default Branch: master
• Last Pushed: 2025-01-29T04:34:45.000Z (9 days ago)
• Last Synced: 2025-01-29T05:25:57.039Z (9 days ago)
• Topics: fastify, nextjs, turborepo
• Language: TypeScript
• Homepage:
• Size: 118 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# SSO Auth

Fastify SSO Auth is a **Single Sign-On (SSO) authentication system** designed to provide seamless authentication across multiple applications. It is built with **Fastify, Next.js, PostgreSQL, and Prisma**, and uses **Turborepo** for managing a monorepo structure.

![Authentication Flow](images/AUTH_SSO.png)

## 🚀 Features

- **SSO Authentication** using JWT and cookies.

- **Fast and lightweight** authentication backend with Fastify.

- **Protected routes** with authentication middleware.

- **Full-stack monorepo** managed with Turborepo.

- **Seamless login persistence** across multiple frontends.

- **PostgreSQL database** managed with Prisma.

- **CORS and security** configured for cross-origin authentication.

---

## 🛠 Tech Stack

- **Backend:** Fastify, Fastify JWT, Prisma, PostgreSQL

- **Frontend:** Next.js (for multiple frontends)

- **Monorepo Management:** Turborepo

- **Authentication:** JWT, Cookies, Fastify Auth

---

## 📂 Project Structure

This project follows a monorepo structure managed by **Turborepo**:

```

repo-root/

├── apps/

│   ├── auth-server/        # Fastify authentication backend

│   ├── server/             # Fastify backend for service 1

│   ├── server-second/      # Fastify backend for service 2

│   ├── web/                # First Next.js frontend

│   ├── web-second/         # Second Next.js frontend

│

├── packages/

│   ├── ui/            # Shared UI components

│   ├── config/        # Shared configuration (e.g., Tailwind, ESLint)

│

├── turbo.json         # Turborepo configuration

└── package.json       # Root package.json with workspace dependencies

```

## 🔐 Authentication Flow

1. **User logs in** → Backend issues a **JWT** stored in an **HTTP-only cookie**.

2. **Frontend apps send requests** with the cookie for authentication.

3. **Protected routes** validate the JWT before granting access.

4. **Logout** clears the authentication token.

5. **If logged in on one frontend**, another frontend recognizes the authentication status automatically.

### 🚀 Happy Coding!