Realtime Notes App

Summary

A side project to explore collaborative editing and data synchronization patterns.

Goals

• Keep editing latency under 100ms in normal network conditions.
• Support offline edits with conflict resolution on reconnect.

Implementation

• CRDT-based document model.
• WebSocket channel for presence and updates.
• Local persistence for offline-first behavior.

Lessons Learned

• Operational transforms are not always necessary for small docs.
• Presence features significantly improve collaboration UX.
• Sync edge cases require robust integration tests.