Redux Toolkit is a package that provides a set of tools and utilities to simplify the process of working with Redux, a popular state management library for JavaScript applications. One of the key features of the Redux Toolkit is its built-in API, which includes several functions and utilities to streamline Redux development.

Redux Toolkit is a package that provides a set of tools and utilities to simplify the process of working with Redux, a popular state management library for JavaScript applications. One of the key features of the Redux Toolkit is its built-in API, which includes several functions and utilities to streamline Redux development.

Here’s an overview of the Redux Toolkit API:

1. createSlice: This utility function allows you to define a Redux slice, which is a collection of reducer logic for managing a specific slice of the application state. It automatically generates action creators and action types based on the reducer logic you provide, reducing boilerplate code.
2. configureStore: This function is used to create a Redux store with sensible defaults, including support for the Redux DevTools Extension. It simplifies the process of setting up a Redux store by combining several configuration steps into a single function call.
3. createAsyncThunk: This utility function simplifies the process of handling asynchronous logic in Redux by creating action creators that automatically dispatch pending, fulfilled, and rejected actions based on the status of an asynchronous operation (e.g., fetching data from an API).
4. createEntityAdapter: This utility function generates a set of reducer functions and selectors for managing normalized entity states in Redux. It helps organize and manage data in a normalized format, making it easier to work with relational data structures in Redux.
5. createReducer: This utility function allows you to define a reducer function using a map of action type to reducer logic, similar to the approach used in createSlice. It's useful for cases where you need more flexibility in defining reducer logic outside of a slice.

Overall, the Redux Toolkit API aims to simplify common Redux use cases, reduce boilerplate code, and improve developer productivity by providing a set of ergonomic and opinionated tools for working with Redux.

How does it handle the Redux data overload issue?

Redux Toolkit doesn’t directly handle data overload issues, but it provides tools and patterns that can help mitigate them:

1. Normalized State Management: The Redux Toolkit encourages normalized state management using utilities like createEntityAdapter. Normalizing data structures can prevent data overload by organizing data in a structured way, making it easier to manage and update.
2. Selective Data Loading: With createAsyncThunk, you can implement selective data loading techniques, such as lazy loading or pagination, to load only the data that's needed at any given time. This can help reduce the amount of data stored in the Redux store and improve performance.
3. Memoization: Redux Toolkit doesn’t handle memoization directly, but you can use memoization libraries like Reselect in conjunction with Redux Toolkit to optimize selectors and prevent unnecessary re-renders caused by data overload.
4. Middleware and Throttling: Redux middleware can be used to implement throttling or debouncing techniques for actions that may trigger data overload. Throttling can help control the rate at which actions are dispatched, preventing excessive updates to the Redux store.
5. Selective State Slicing: Use selectors to retrieve only the necessary parts of the state tree rather than accessing the entire state object. This can help improve performance and reduce memory usage, especially when dealing with large amounts of data.

While Redux Toolkit provides useful tools and patterns for managing Redux state, it’s important to design your application’s state management strategy carefully to avoid data overload issues. This may involve a combination of normalization, selective data loading, memoization, and other performance optimization techniques tailored to your specific use case.