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Collaborative cloud notepad (real-time sync)

Why Choose This Project?

Collaboration tools like Google Docs or Notion are widely used because they allow multiple users to edit and sync content in real-time.
Building a cloud-based collaborative notepad teaches students about real-time communication (WebSockets, WebRTC, Firebase RTDB), cloud storage, and multi-user synchronization, which are core skills for modern web apps.

What You Get

Cloud-hosted collaborative notepad
Multi-user real-time editing with sync
User authentication & secure access
Autosave & version history
Share notes with collaborators
Accessible from web/mobile
Rich-text editing support (optional)

Key Features

Feature	Description
Real-Time Collaboration	Multiple users can edit a note simultaneously
Cloud Sync	Changes are stored and synced across devices
Authentication	Secure login with Google, GitHub, or email
Note Management	Create, edit, delete, share notes
Access Control	Owner can make notes private or shared
Version History	Track and restore past versions
Rich Text Support	Bold, italic, underline, lists, links, etc.
Offline Support	Local caching and sync once online
Notifications	Notify collaborators of updates

Technology Stack

Layer	Tools/Technologies
Frontend	React / Angular / Vue, Quill.js (for rich text editor)
Real-Time Sync	Firebase Realtime Database / Firestore, or WebSockets (Socket.io)
Backend	Node.js + Express / Spring Boot (if not using serverless)
Cloud Database	Firebase Firestore / AWS DynamoDB / Azure Cosmos DB
Authentication	Firebase Auth / AWS Cognito / OAuth 2.0
Hosting	Firebase Hosting / AWS Amplify / Azure App Service
File Storage	AWS S3 / Firebase Storage (for file attachments)
Deployment	CI/CD with GitHub Actions, Amplify, or Firebase

Cloud Services Used

Service	Purpose
Firebase Firestore / RTDB	Real-time note storage and syncing
Firebase Auth / AWS Cognito	Authentication and user management
Firebase Hosting / AWS Amplify	Frontend hosting and deployment
Firebase Cloud Functions / AWS Lambda	Serverless backend for note sharing logic
AWS S3 / Firebase Storage	Store attachments/images in notes
Cloud Monitoring (CloudWatch / Firebase Logs)	Monitor app usage and performance

Working Flow

User Authentication
- Users sign in using Google/Firebase Auth.
- Tokens are generated for secure access.
Create/Access Notes
- User creates a note stored in Firestore/DynamoDB.
- Notes can be marked as private or shared.
Real-Time Collaboration
- Multiple users edit the same note simultaneously.
- Changes are pushed instantly via Firestore RTDB/WebSockets.
- Conflict resolution ensures smooth syncing.
Autosave & Versioning
- Notes are auto-saved after each keystroke.
- Version history maintained for rollback.
Offline Support
- Changes made offline are cached locally.
- Once online, the data syncs automatically.
Sharing & Notifications
- Notes can be shared with specific users.
- Notifications sent when collaborators edit the note.
Security & Monitoring
- IAM roles and database rules restrict access.
- Cloud monitoring checks uptime & usage.