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Optimistic UI Rollback Corruption on Server Rejections : Merge Correctness Under Concurrent Mutation

TypeScriptReactTanStack QueryOT libraries

Problem Breakdown

The root defect is that mutation is allowed concurrently from multiple writers while correctness is deferred to a merge step that was never designed with domain semantics in mind. Optimistic update layers apply local mutations before server confirmation; when the server rejects or the mutation conflicts, the rollback r…

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