Optimistic UI Updates
Implement optimistic UI patterns with Server Actions to provide instant feedback to users before server confirmation.
Instant Feedback with Optimistic UI
Imagine clicking 'Like' on a post. Does it update instantly, or do you wait for a spinner?
Optimistic UI is a technique where the user interface updates immediately after an action, *before* the server confirms it. This gives users instant feedback and makes your app feel much faster and more responsive.
How Optimistic UI Works
The process is simple:
- User Action: The user performs an action (e.g., submitting a form).
- Instant UI Update: Your UI immediately updates to reflect the *expected* outcome.
- Server Action: In the background, a server request (like a Next.js Server Action) is sent to perform the actual operation.
- Reconciliation: If the server action succeeds, the UI stays as is. If it fails, the UI reverts to its previous state.
This creates a smooth, uninterrupted user experience.
All lessons in this course
- Optimistic UI Updates
- File Uploads with Actions
- Validation & Error Handling in Server Actions