What Is Optimistic UI and When to Use It
Understand the UX benefits of optimistic updates and the scenarios where they are safe to apply.
Defining Optimistic UI
Optimistic UI is a UX pattern where the application assumes a mutation will succeed and updates the interface immediately — before the server responds. The user sees the result of their action right away, and the actual network request happens in the background. If the request succeeds, nothing changes. If it fails, the UI rolls back.
The Core UX Benefit
Network requests, especially on mobile or slow connections, introduce latency that makes apps feel sluggish. Optimistic UI eliminates this perception of delay. A like button toggles the moment it is tapped. An item appears in the list the moment it is added. The app feels instantaneous even when the network is not.
All lessons in this course
- What Is Optimistic UI and When to Use It
- Implementing Optimistic Updates Manually
- Rollback on Error and Conflict Resolution
- Optimistic Patterns with React Query and Zustand