A real-time voting app teaches you about WebSockets, state management, and real-time UI updates—perfect for understanding dynamic multi-user environments.
Stack suggestion:
- Backend: Node.js + Socket.IO
- Frontend: React or Vue
- Optional DB: Firebase, MongoDB, or Redis
Core functionality:
- Users see a list of options (e.g., favorite programming language).
- They vote, and results update instantly for all connected users.
- Prevent duplicate votes using IP address or session.
- Display results as a live chart (e.g., with Chart.js or Recharts).
How WebSockets help:
- On each vote, emit an event via Socket.IO.
- Broadcast new results to all connected clients.
- Clients update the UI instantly without refreshing.
Bonus ideas:
- Add admin reset controls.
- Save results persistently with a database.
- Anonymous vs. authenticated voting.
This app is a great real-time demo for interviews and showcases your grasp of event-driven programming.
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