Redux, Redux Toolkit & RTK Query — State. Fetch. Master.

Practice modern state management the right way. Each topic-wise set includes 20 Basic, 20 Intermediate, and 10 Advanced questions to take you from classic Redux concepts to production-ready apps with Redux Toolkit (RTK) and RTK Query.

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Why practice with these assignments?

  • Build real features using predictable state, pure reducers, and typed actions.
  • Learn idiomatic Redux Toolkit patterns: configureStore, createSlice, createAsyncThunk, and more.
  • Master server-state workflows with RTK Query: caching, invalidation, pagination, and optimistic updates.
  • Prepare for interviews and large codebases with tasks that mirror real-world problems.

How it works

  1. Pick a topic from the list.
  2. Attempt questions in order: Basic → Intermediate → Advanced.
  3. Run locally, inspect updates via Redux DevTools, and profile renders.
  4. Validate immutability and serializability; fix warnings from middleware.
  5. Save your best solutions as portfolio-ready snippets.

Notes:

  • Focus is React 18+ with Redux Toolkit 2.x.
  • JavaScript or TypeScript—your choice (TS prompts appear on relevant topics).
  • Prefer RTK & RTK Query over legacy hand-written Redux where indicated.

Who should use this page?

React learners, interview preppers, and developers moving from legacy Redux to Redux Toolkit & RTK Query.

Tips for success

  • Keep state minimal and normalized; derive everything else with selectors.
  • Never store non-serializable values (e.g., DOM nodes, Promises) in the store.
  • Use createSlice for nearly all reducer logic—avoid handwritten switch reducers.
  • Prefer RTK Query for server data instead of custom thunks whenever feasible.
  • Add entity adapters for collections; it simplifies CRUD and pagination.
  • Profile re-renders; memoize selectors and component boundaries thoughtfully.
  • Test reducers and selectors as pure functions; mock network with MSW for thunks/RTKQ.

Ready to build real confidence in Redux, Redux Toolkit & RTK Query? Pick a set below and start solving!

Assignment-1

Assignment-2

Assignment-3

Assignment-4

Assignment-5

Assignment-6

FAQs

Q1. Do I need prior Redux knowledge?

Basic React helps. The assignments start from fundamentals and quickly move to idiomatic RTK.

Q2. Should I use TypeScript?

Optional—but highly recommended. Topics include TS prompts for typesafe slices, thunks, and APIs.

Q3. How do I verify correctness?

Use Redux DevTools to inspect actions/state, check selector outputs, and write tests for reducers/thunks/RTKQ hooks.

Q4. Are there solutions?

Selected topics include reference implementations and alternative approaches. Attempt first; then compare.

Q5. How much time should I spend?

Plan 20–60 minutes per difficulty band per topic; RTK Query tracks may take longer initially.