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TanStack · Pipe

onMutate

Optimistic updates change cached query data before a mutation finishes. Save the old data for rollback, then invalidate the query after success or failure.

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Syntax

useMutation(mutationFn, { onMutate, onError, onSettled })

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  • useMutation
  • onMutate
  • onError
  • onSettled
  • useQueryClient
  • cancelQueries
  • getQueryData
  • setQueryData

Source: Optimistic Updates | TanStack Query React Docs. Checked 2026-11-03.