Redux RTK Query in React Native

Last Updated : 20 Jan, 2026

Redux Toolkit Query (RTK Query) is a modern data-fetching and caching solution built into Redux Toolkit that removes the need for manual API calls and boilerplate state management. It automatically handles loading, caching, and synchronization of server data in React Native apps.

  • Automatically manages caching, background re-fetching, and request deduplication to keep server data up to date.
  • Generates ready-to-use query and mutation hooks, making API integration simple and scalable with minimal code.

Prerequisites

Before getting started, ensure your development environment is ready with the required tools and dependencies.

  • Node.js and npm installed from the official Node.js website
  • React Native CLI installed globally using npm install -g react-native-cli
  • Redux Toolkit added to the project using npm install @reduxjs/toolkit
  • An API for testing, such as the JSONPlaceholder mock API

Implementing RTK Query

It involves setting up the Redux store, defining API endpoints, and using auto-generated hooks to efficiently fetch and manage server data with minimal boilerplate.

Step 1: Set Up Redux Store

Create a Redux store using Redux Toolkit in your project. This typically involves creating a store.js file where you define your Redux store configuration.

JavaScript 
// store.js
import { configureStore } from '@reduxjs/toolkit';

export const store = configureStore({
  reducer: {
    // Your reducers here
  },
});
  • Initializes a centralized Redux store to manage application state.
  • Uses Redux Toolkit to reduce boilerplate and simplify store configuration.

Step 2: Install RTK Query

Install RTK Query and its dependencies:

npm install @reduxjs/toolkit react-redux @reduxjs/toolkit-query

Step 3: Define an API Slice

Define an API slice using RTK Query. This involves creating a apiSlice.js file where you configure your API endpoint.

JavaScript 
// apiSlice.js
import { createApi, fetchBaseQuery } from '@reduxjs/toolkit/query/react';

export const apiSlice = createApi({
  reducerPath: 'api',
  baseQuery: fetchBaseQuery({ baseUrl: 'https://jsonplaceholder.typicode.com/' }),
  endpoints: (builder) => ({
    fetchPosts: builder.query({
      query: () => 'posts',
    }),
  }),
});

export const { useFetchPostsQuery } = apiSlice;
  • Defines a centralized API layer with base URL and endpoints.
  • Automatically generates hooks like useFetchPostsQuery for data fetching.

Step 4: Configure Store with API Slice

Configure your Redux store to include the API slice:

JavaScript 
// store.js
import { configureStore } from '@reduxjs/toolkit';
import { apiSlice } from './apiSlice';

export const store = configureStore({
  reducer: {
    [apiSlice.reducerPath]: apiSlice.reducer,
  },
  middleware: (getDefaultMiddleware) => getDefaultMiddleware().concat(apiSlice.middleware),
});
  • Registers the API slice reducer to store fetched data in Redux state.
  • Adds RTK Query middleware to handle caching, polling, and re-fetching

Step 5: Use RTK Query Hooks in Components

You can now use the RTK Query hooks (useFetchPostsQuery in this case) in your React Native components to fetch data from the API.

JavaScript 
// PostList.js
import React from 'react';
import { View, Text } from 'react-native';
import { useFetchPostsQuery } from './apiSlice';

const PostList = () => {
  const { data: posts, error, isLoading } = useFetchPostsQuery();

  if (isLoading) return <Text>Loading...</Text>;
  if (error) return <Text>Error: {error}</Text>;

  return (
    <View>
      {posts.map((post) => (
        <Text key={post.id}>{post.title}</Text>
      ))}
    </View>
  );
};

export default PostList;
  • Fetches API data automatically using the generated query hook.
  • Handles loading and error states without manual state management.

Step 6: Connect Redux Store to Your App

Finally, wrap your app with the Redux store provider to make the store accessible to your components.

JavaScript 
// App.js
import React from 'react';
import { Provider } from 'react-redux';
import { store } from './store';
import PostList from './PostList';

const App = () => {
  return (
    <Provider store={store}>
      <PostList />
    </Provider>
  );
};

export default App;
  • Makes the Redux store accessible throughout the component tree.
  • Enables RTK Query hooks to work seamlessly inside React Native components.
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