React Query

Posted July 23, 2023 by Rohith and Anusha ‐ 3 min read

In modern web development, real-time data fetching and management have become essential to create responsive and dynamic user experiences. However, implementing and maintaining such features can be complex and time-consuming. This is where React Query comes to the rescue. React Query is a powerful and intuitive library that simplifies data management in React applications, making it easier to handle data fetching, caching, and synchronization.

What is React Query?

  • React Query is an open-source library developed by Tanner Linsley that provides a set of hooks and utilities to manage asynchronous data in React applications.

  • It is designed to streamline the process of fetching, caching, synchronizing, and updating data from various sources, such as APIs and databases.

  • React Query takes advantage of React’s rendering capabilities to ensure that your application’s data is always up to date and consistent with the server.

Key Features of React Query

Data Fetching Made Simple

  • With React Query, fetching data from APIs becomes straightforward and declarative.

  • It offers various hooks like useQuery and useMutation that handle the data-fetching process for you, allowing you to focus on building user interfaces instead of dealing with the complexities of data management.

Automatic Caching and Background Data Fetching

  • React Query automatically caches API responses, which means that subsequent requests for the same data won’t result in redundant network calls.

  • It also provides background data fetching, ensuring that the cached data is updated in the background at a specified interval, keeping your application data fresh.

Optimistic Updates

  • When performing a mutation (POST, PUT, DELETE, etc.), React Query allows you to update the local cache optimistically before the server responds.

  • This leads to a snappy user experience as users see immediate feedback while the actual response is being processed.

Pagination and Infinite Loading

  • React Query provides built-in support for pagination and infinite loading, making it effortless to handle large datasets without overwhelming the user with all the data at once.

Error and Retry Handling

  • React Query offers error handling capabilities, allowing you to gracefully handle API errors.

  • Additionally, you can configure retry strategies to automatically reattempt failed requests, improving the overall reliability of your application.

Getting Started with React Query

To use React Query in your project, you need to install it via npm or yarn:

npm install react-query
# or
yarn add react-query

Once installed, you can import and wrap your application with the QueryClientProvider, which sets up the React Query client:

import { QueryClient, QueryClientProvider } from "react-query";

const queryClient = new QueryClient();

function App() {
  return (
    <QueryClientProvider client={queryClient}>
      {/* Your app components */}

Using React Query Hooks

To start fetching data, you can use the useQuery hook:

import { useQuery } from "react-query";

function MyComponent() {
  const { data, isLoading, error } = useQuery("todos", () =>
    fetch("/api/todos").then((res) => res.json())

  if (isLoading) {
    return <div>Loading...</div>;

  if (error) {
    return <div>Error: {error.message}</div>;

  return (
      { => (
        <li key={}>{todo.text}</li>


  • React Query is undoubtedly a game-changer when it comes to handling data in React applications.

  • Its simplicity, powerful features, and seamless integration with React make it an excellent choice for managing data fetching, caching, and synchronization.

  • Whether you’re building a small project or a large-scale application, React Query can significantly improve data management efficiency and overall user experience.

quick-references blog react-query react-library

Subscribe For More Content