TOPIC OVERVIEW

RTK/Scenario Based

Put Redux Toolkit together and learn how to solve the problems you actually face in React applications.

15 QuestionsExpertHigh Priority ~15 min read

Knowing Redux Toolkit features individually is useful, but real applications require you to decide how those features should work together. Scenario-based problems give you situations such as managing authentication, shopping carts, API data, optimistic updates, or complex application state and ask you to choose the right Redux Toolkit approach.

These problems are closer to what you may face in a real project or technical interview. Instead of simply remembering APIs, you need to reason about where state belongs, when to use slices or RTK Query, how asynchronous operations should work, and how different pieces of Redux communicate.

What you'll walk away knowing

How to choose between local state, Redux state, and server state

When to use createSlice, createAsyncThunk, or RTK Query

How to structure Redux state for real applications

How to reason through common Redux Toolkit interview scenarios

11. How do you structure Redux Toolkit in a large-scale React app (folder structure)?ExpertHigh 22. How would you migrate an old Redux app to Redux Toolkit?ExpertHigh 33. How do you integrate RTK Query and createAsyncThunk in the same app?ExpertHigh 44. How do you persist Redux state across reloads while using RTK Query?ExpertHigh 55. How would you implement optimistic UI updates for POST/DELETE using RTK Query or Thunk?ExpertHigh

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