Hospital Bed Allocation System (Mini Project)

A compact MERN + Next.js 14 full-stack project demonstrating OS, DSA, and DBMS concepts:

• DSA: Priority Queue (severity-based patient admission)
• OS: Banker's Algorithm for safe ICU bed allocation
• DBMS: MongoDB with transaction rollback for unsafe allocations

Tech Stack

• Frontend: Next.js 14 (App Router), TailwindCSS, Shadcn/UI
• Backend: Express, Node.js, TypeScript
• Database: MongoDB (Mongoose)

Features

• Patient admission form (/admit)
• Bed allocation with priority queue and Banker's Algorithm
• Dashboard: patients, ICU bed usage, logs

Setup

1. Backend

cd backend
npm install
cp .env.example .env # or set MONGO_URI and PORT in .env
npm run dev:server

2. Frontend

cd frontend
npm install
npm run dev:client

• Frontend: http://localhost:3000
• Backend: http://localhost:5000

API Endpoints

• POST /api/patient – Admit patient
• GET /api/patients – List patients
• POST /api/allocate – Run allocation
• GET /api/resources – ICU bed usage
• GET /api/logs – System logs

Notes

• ICU bed resource must be initialized in DB as { name: "ICU_BED", totalUnits: 10, allocatedUnits: 0 }
• PriorityQueue and Banker's Algorithm are implemented with TODOs for further study.