QRAR — Restaurant Ordering SaaS Platform

A multi-tenant SaaS platform enabling restaurants to manage menus, orders, and offers through a centralized system. Built solo from scratch — currently live with 2+ paying restaurant clients.

🔗 Live Demo · Dashboard

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✨ Features

• Multi-tenant architecture — each restaurant gets its own isolated data and custom menu
• QR-based ordering — customers scan a QR code to view the menu and place orders instantly
• Restaurant dashboard — manage menu items, categories, offers, and incoming orders in real time
• Secure authentication — JWT-based auth with role separation (admin vs customer)
• API security — rate limiting, CORS policies, and input validation on all endpoints
• Image management — Cloudinary integration for scalable menu image storage

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🛠 Tech Stack

Layer	Technology
Frontend	React.js, Tailwind CSS
Dashboard	React.js, Tailwind CSS
Backend	Node.js, Express.js
Database	MongoDB Atlas
Auth	JWT (JSON Web Tokens)
Image Storage	Cloudinary
Deployment	Vercel (frontend) · Render (backend) · MongoDB Atlas (DB)

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🏗 Architecture

├── Frontend/        # Customer-facing menu & ordering UI (React)
├── Dashboard/       # Restaurant admin panel (React)
├── Backend/         # REST API server (Node/Express)
│   ├── routes/      # API route handlers
│   ├── models/      # MongoDB schemas
│   ├── middleware/  # Auth, rate limiting, validation
│   └── controllers/ # Business logic

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🔐 Security Implementation

• JWT authentication with token expiry and refresh logic
• Rate limiting on all public API endpoints to prevent abuse
• CORS configured per tenant domain
• Input sanitization and validation on all POST/PUT routes

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🚀 Getting Started

Prerequisites

• Node.js v18+
• MongoDB Atlas account
• Cloudinary account

Installation

# Clone the repo
git clone https://github.com/Mahato-Rambabu/qrar.git
cd qrar

# Install backend dependencies
cd Backend
npm install

# Install frontend dependencies
cd ../Frontend
npm install

# Install dashboard dependencies
cd ../Dashboard
npm install

Environment Variables

Create a .env file in the Backend folder:

MONGO_URI=your_mongodb_connection_string
JWT_SECRET=your_jwt_secret
CLOUDINARY_CLOUD_NAME=your_cloudinary_name
CLOUDINARY_API_KEY=your_cloudinary_key
CLOUDINARY_API_SECRET=your_cloudinary_secret
PORT=5000

Run Locally

# Start backend
cd Backend && npm run dev

# Start frontend (new terminal)
cd Frontend && npm run dev

# Start dashboard (new terminal)
cd Dashboard && npm run dev

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👤 Author

Rambabu Mahato
Portfolio · LinkedIn · GitHub

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📄 License

MIT License — see LICENSE for details.