Real-time Collaborative App

Part of the Full Stack Developer Roadmap.

Summary

A shared, live-updating app (a collaborative list, board, or simple document) — bringing together WebSockets, state sync, and multi-user considerations across your whole stack.

How to Learn This

1Show multiple users' changes appearing live without a page refresh.
2Handle two users editing the same item at nearly the same time.
3Add a simple presence indicator showing who else is currently connected.

Real-time State Sync

Unit Testing (Frontend)

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