Problem Statement
How would you implement authentication flow with Redux Toolkit in a real application?
Explanation
Implement authentication by creating an auth slice managing user state, login status, and tokens, with createAsyncThunk for login, logout, and token refresh operations that call your authentication API. Store the auth token in state and use it in RTK Query's prepareHeaders to add authentication headers to all API requests, implement automatic token refresh logic in a custom baseQuery that catches 401 errors, and handle logout by dispatching an action that clears auth state and invalidates all cached data. Persist auth state to localStorage using redux-persist or custom middleware, protect routes based on auth state using React Router guards, and implement session timeout logic with middleware that tracks activity and dispatches logout after inactivity. Consider security by not storing sensitive data unnecessarily, using secure token storage, and implementing proper CSRF protection.
Practice Sets
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