TOPIC OVERVIEW

RTK/Thunk

Handle asynchronous work in Redux when an action needs to do more than update state immediately.

15 QuestionsAdvancedHigh Priority ~10 min read

A thunk lets you dispatch a function instead of a normal action object. This is useful when something needs to happen asynchronously, such as fetching data from an API before updating the Redux state.

Redux Toolkit includes thunk middleware by default and provides createAsyncThunk to make common async workflows easier. It can automatically generate pending, fulfilled, and rejected states so your application can handle loading, success, and error conditions cleanly.

What you'll walk away knowing

Why asynchronous logic needs middleware

How thunks work with dispatch and getState

How createAsyncThunk handles async requests

How pending, fulfilled, and rejected states are managed

11. What is a thunk in Redux?ExpertHigh 22. What is the difference between redux-thunk and createAsyncThunk?ExpertHigh 33. How does createAsyncThunk simplify async actions?ExpertHigh 44. What are the lifecycle actions automatically created by createAsyncThunk?ExpertHigh 55. How do you handle pending, fulfilled, and rejected states in slices?ExpertHigh 66. What are the advantages of using createAsyncThunk over manual thunks?ExpertHigh 77. How do you pass parameters to a thunk function?ExpertHigh 88. How do you handle API errors inside a thunk?ExpertHigh 99. How can you cancel a running thunk or API call?ExpertHigh 1010. How can you chain multiple async thunks?ExpertHigh 1111. How can you use getState and dispatch inside a thunk?ExpertHigh 1212. How do you use thunks in combination with RTK Query?ExpertHigh 1313. How do you test thunks and async actions?ExpertHigh 1414. What are best practices for organizing async logic with thunks?ExpertHigh 1515. How do you dispatch a thunk from a React component using hooks?ExpertHigh 1616. How do you manage loading indicators with thunks?ExpertHigh 1717. What’s the performance implication of using too many thunks?ExpertHigh 1818. How can you refactor thunk-based APIs to RTK Query-based APIs?ExpertHigh

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