SaaS Products

CollabNote — Collaborative Notes

<30ms Delta Sync Delay

Timeline

3 Months

Role

Full-Stack Developer

Stack

React 19Node.jsSocket.IOMongoDBGemini AI+3
CollabNote — Collaborative Notes

Overview

CollabNote is an intelligent collaborative notes platform featuring live delta syncing, cursor tracking, and AI-powered document summaries.

The Challenge

Resolving synchronization conflicts between multiple editors writing on the same paragraph at the same time.

Our Process

Implemented dynamic operational transformations via Quill.js and synchronized them over WebSockets. Integrated Gemini AI on a background job to summarize documents.

The Solution

Constructed a robust backend using Node.js and Socket.IO, featuring secure JWT authentication and custom API key rotation.

Results

<30ms

Delta Sync Delay

99.9%

Document Sync Accuracy

5s

AI Summary Speed

Gallery

Shared Rich-Text Canvas and Cursor Sync
Shared Rich-Text Canvas and Cursor Sync