Case Study: Collaborative Editing

Modeling real-time collaborative editing with conflict resolution and cursor state management.

Overview

Collaborative editing requires managing connection states, cursor positions, pending changes, and conflict resolution — all of which map naturally to state machines.

Key Concepts

Connection states: disconnected → connecting → connected → reconnecting

Change queue as actor context

Conflict resolution as guard conditions

Cursor broadcasting as parallel state

Pattern: Data Fetching — Async communication

Learn: Actor Model — Actor-based architecture

Pattern: Undo/Redo — History management

TODO

Add WebSocket connection machine

Add CRDT merge machine

Add cursor sync actor

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