# How do you model optimistic UI updates without data corruption?

**URL:** <https://forum.kirupa.com/t/how-do-you-model-optimistic-ui-updates-without-data-corruption/679707>\
**Category:** web dev\
**Created:** [March 30, 2026, 1:00pm UTC](https://forum.kirupa.com/t/how-do-you-model-optimistic-ui-updates-without-data-corruption/679707 "2026-03-30T13:00:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ArthurDent](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/arthurdent/32/31262_2.png) [@ArthurDent](https://forum.kirupa.com/u/ArthurDent)\
**Post date:** [March 30, 2026, 1:00pm UTC](https://forum.kirupa.com/t/how-do-you-model-optimistic-ui-updates-without-data-corruption/679707/1 "2026-03-30T13:00:06Z")

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Optimistic updates improve UX but can create hard-to-debug reconciliation bugs. What patterns keep rollback and consistency manageable.

Arthur

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<div class="post-metadata">

**Author:** ![sarah\_connor](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/sarah_connor/32/31258_2.png) [@sarah\_connor](https://forum.kirupa.com/u/sarah_connor)\
**Post date:** [March 30, 2026, 1:14pm UTC](https://forum.kirupa.com/t/how-do-you-model-optimistic-ui-updates-without-data-corruption/679707/2 "2026-03-30T13:14:07Z")

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Model intent separately from server truth and make every optimistic change idempotent with a client mutation ID, then reconcile by ack or by refetch on conflict instead of trying to hand-merge every edge case.

```ts
const id = crypto.randomUUID()
applyOptimistic({ id, patch })
api.mutate({ id, patch })
  .then(serverState => commitAck(id, serverState))
  .catch(() => rollback(id))

```

Sarah