How do I avoid re-renders with Redux?
Write specific selectors. In useSelector, select only the data a component needs, not a whole slice. For derived state, use memoized selectors with reselect so the derived value is only recomputed when its inputs change.
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More FAQs in A Roadmap to Mastering Redux in React Projects
In order: understand the problem Redux solves, learn the core concepts of store, actions, and reducers, learn RTK basics with createSlice and configureStore, read and dispatch with useSelector and useDispatch, handle async with createAsyncThunk, then learn RTK Query and patterns at scale.
Why Redux exists: managing shared state across many components without prop drilling. Feel the pain that Context cannot solve before learning Redux, so you understand the problem it solves and when to use it.
After you can read and dispatch with useSelector and useDispatch. createAsyncThunk handles async like data fetching, and you manage its pending, fulfilled, and rejected cases in extraReducers. Build a feature that fetches data to practice.
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