Choosing the right state management is one of the most impactful architectural decisions. Here's my honest comparison after using all three at Google.
React Context
Built-in, zero dependencies. But it has a major limitation: any value change re-renders ALL consumers.
Zustand
My recommendation for most apps. Minimal boilerplate, great performance, tiny bundle (1KB).
Redux Toolkit
Still relevant for large apps with complex state logic, time-travel debugging needs, or teams familiar with it.
Decision Matrix
| Criteria | Context | Zustand | Redux |
|---|---|---|---|
| Bundle size | 0KB | ~1KB | ~11KB |
| Boilerplate | Low | Very Low | Medium |
| Re-render optimization | Poor | Excellent | Good |
| DevTools | React DevTools | Redux DevTools | Redux DevTools |
| Async support | Manual | Built-in | RTK Query/Thunks |
| Learning curve | Easy | Easy | Moderate |
My Recommendation
- Simple shared state (theme, auth): React Context
- Medium apps: Zustand
- Large apps with complex state: Redux Toolkit or Zustand
- Server state: Always TanStack Query (not in your state manager!)