Major Project
Web Development
Real-Time Collaborative Code Editor
Multiplayer editing with CRDTs, live cursors and sandboxed execution
- Next.js
- TypeScript
- Yjs
- WebSockets
- +2
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Web Development · Major Project
Real-Time Online Auction Platform
Live bidding over WebSockets with anti-sniping extensions and history
3-4 weeks build
Overview
Sellers list an item with a reserve price, bid increment and end time, and an admin approves it. Bids are sent over WebSockets and validated on the server one at a time per auction, so a bid must beat the current highest by the increment and only one can win a race. A bid in the last minute pushes the end time back to stop sniping, and every bid is kept in an append-only history.
What makes it stand up
- 01Live bidding pushed to every watcher over WebSockets
- 02Server-side bid validation serialised per auction so races resolve cleanly
- 03Anti-sniping rule that extends the end time on late bids
- 04Reserve prices, minimum increments and optional proxy bidding
- 05Append-only bid history and a winner notification when the auction closes
Module breakdown
- 01
Listings
Items with photos, reserve, increment and schedule.
- 02
Bidding engine
Serialised bid acceptance with increment and reserve rules.
- 03
Realtime layer
Socket.IO rooms per auction with Redis pub/sub.
- 04
Closing
Timer service with anti-sniping extension and winner selection.
- 05
History
Bid log, watchlists and seller and buyer dashboards.
After this, you will be able to
- Explain how you serialise concurrent bids on the same item
- Defend your anti-sniping extension rule
- Demo a live auction with the examiners bidding against each other
Technology stack
- React
- Node.js
- Socket.IO
- Redis
- PostgreSQL
- Level
- Major Project
- Domain
- Web Development
- Build time
- 3-4 weeks
- Difficulty
You receive
- Complete, commented source code
- 60-90 page project report (IEEE format)
- Editable presentation deck
- Architecture, ER and UML diagrams
- Local setup and deployment guide
- Sample dataset or seed data
- Viva question bank with answers
- One 45-minute walkthrough call
- 30 days of doubt-clearing support