Canvas: Real-Time Collaboration Engine

The idea

A multi-client whiteboard, and the hard part underneath it: keeping everyone’s view of the board identical while people draw at the same time on imperfect networks.

What I built

• PostgreSQL replication listeners push changes to clients, with state sync under 100 ms.
• Optimistic UI and conflict resolution that hold up under packet loss and network jitter.
• An event broadcast system that manages concurrent sessions with consistent shared state across N clients.

Result

Sub-100 ms state sync between clients.

Code

The repository link goes here once it’s public. Meanwhile, see github.com/rajellaram.