Optimistic UX
summary
Argues that optimistic mutations boost perceived performance by updating UI immediately, then reconciling with the server; demonstrates a Remix demo using useTransition/useFetcher and a Next.js demo using TanStack Query (React Query) with onMutate snapshot, cache update, rollback on error and retries, plus a statechart example using XState. Shows a flaky server simulation that fails twice then succeeds and the rollback/retry logic working. Warns against optimism for critical flows (logins, bank transfers).
AI-written summary · about
chapters (10)
- 0:00Introduction to Optimistic UX
- 2:01Defining design UI UX usability
- 8:46Traditional vs single-page apps
- 13:10What are optimistic mutations
- 14:49State machine for error handling
- 20:17Optimistic UX in Remix
- 29:12Optimistic UX in Next.js
- 35:12Live demo with Next.js
- 38:17Summary and takeaways
- 48:46Q&A session
related talks
33mThe Functional Final Frontier
48mUX Programming for Developers
09mUXers
30mReactive interface
29mWhen “Good Enough” - Just Isn’t Good Enough
20mGood design hasn’t changed with AI
26mShapeshifters: The #1 UX Mistake You Don't Know You're Making with Sophia Prater
37mAnimation in UX: The Subconscious Influence of Motion