Collaborative Code Editor — Notes

Functional

• Live share IDE session: host + guests edit / debug.
• Shared terminal, debugger, ports.
• Language server intelligence shared.
• Read-only / write modes.

Non-functional

• Sub-200 ms edit echo.
• Survive network glitches without losing edits.
• Host security: limit visible FS.

Trade-offs

• P2P over relay: P2P best latency but NAT issues.
• OT vs CRDT for text: same trade-offs as Docs.
• Host as authority simplifies file system semantics.

Refs

• VS Code Live Share docs + RFC.
• "How Live Share Works" Microsoft devblogs.
• Yjs collaborative editing demos.