Redux Toolkit

Redux state with simplified API. createSlice, configureStore, RTK Query for predictable state and async logic.

When to Use

• Global app state in React (slices, store, middleware)
• Async logic (RTK Query, createAsyncThunk)
• Normalizing entities with EntityAdapter
• Replacing legacy Redux

Don't use for:

• Local state (use useState/useReducer)
• Server state caching (use React Query/SWR)
• Non-React Redux