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Web Development – PS3 (Advanced)

Backend Basics

  • Node.js + Express.js
  • RESTful API Design
  • CRUD Operations
  • Middleware Concepts

Authentication & Security

  • JWT / OAuth2
  • Password Hashing (bcrypt)
  • HTTPS Basics

Databases

Learn enough to use databases effectively. No need to implement PostgreSQL from scratch.

  • MongoDB generally integrates well with Node.js (install MongoDB Compass)
  • PostgreSQL is better for strict data constraints (install PgAdmin)

Problem Statement 1

Health Center Appointment Booking System
Manage appointments for college health centers.

Tech Stack: Node.js + Express + PostgreSQL + React
Features:

  • Patient registration
  • Doctor availability calendar
  • Appointment booking & cancellation
  • Admin dashboard for doctor schedules
  • Email notifications

WebSockets & Realtime

  • WebSocket API
  • Socket.IO

Problem Statement 2

Anonymous Dating App for College
Real-time anonymous chatting app for college environments.

Tech Stack: Node.js + Express + MongoDB + WebSockets + React
Features:

  • Anonymous profile creation
  • One-to-one real-time chat
  • Matchmaking based on interests
  • Persistent chat history
  • Real-time online status

Networking Basics

  • HTTP / HTTPS Protocols
  • TCP / UDP Basics
  • WebRTC Basics (STUN/TURN servers)

Problem Statement 3

One-to-One WebRTC Video Call & File Transfer System
Peer-to-peer video calls and file transfer.

Tech Stack: Node.js + Express + WebRTC + STUN/TURN Server + WebSockets
Features:

  • Real-time video/audio calls
  • Text chat fallback
  • File transfer (small files, images, docs)
  • Signaling server with WebSocket