state syncadvancedReddit r/ExperiencedDevs thread with 400+ upvotesMAX
Undo/Redo Stack Divergence in Multiplayer Editing : Delta Stream Integrity and Reconciliation
TypeScriptYjsMonaco EditorWebSockets
Problem Breakdown
The integrity defect is that delta-based synchronization treats delivery as the contract when the actual contract is state equivalence: a client that receives every delta must end up in exactly the server's state, and nothing in the pipeline verifies this. Collaborative editors implement undo as a per-user operation st…
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