React Query Implementation And Why Should You Use It
Tags: react, typescript, javascript, nodej
Published: 2023-01-01 11:59:52


![react-query](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/6ngpb0zqrlvm75xwaqmo.png)

you can view the full article here [here](https://www.elbarryamine.com/blog/react-query-implementation-and-why-should-you-use-it)

## Overview
Hi 👋 You, Today, I'm going to discuss React Query and why i am telling you that you should use it.

React Query is a library that makes managing asynchronous data in React applications easier. It provides a simple API for retrieving, caching, and updating data and makes it simple to handle data that changes over time. In this article, we'll look at the advantages of using React Query as well as how to get started using it in your projects.

## Why React Query ?

You may want to use React Query in your React applications for a variety of reasons, including:

1. React Query provides a simple API for handling data, making it easier to manage data in your application.
2. React Query can improve your application's performance by reducing the number of network requests made and only fetching data when it is required.
3. React Query makes it simple to handle errors that may occur when fetching data, such as network or server-side errors. It includes tools for displaying error messages to users as well as retrying failed requests.
4. React Query includes tools for debugging and profiling the performance of your data management, making it easier to understand how your application works and identify potential issues.

Overall, React Query can be a helpful tool for managing asynchronous data in your React applications, allowing you to create more performant and reliable applications.

## Setup
Let's start by installing React Query

`npm i @tanstack/react-query`
or
`yarn add @tanstack/react-query`

Then, in your React components, you can use the useQuery hook to fetch data. The useQuery hook accepts an options object containing the query to be executed as well as any additional parameters, such as variables or query options.

```
import {
  QueryClient,
  QueryClientProvider,
  useQuery,
} from '@tanstack/react-query'

const queryClient = new QueryClient()

export default function App() {
return (
  <QueryClientProvider client={queryClient}>
    <Example />
  </QueryClientProvider>
 )
}

function Example() {
const { isLoading, error, data } = useQuery({
  queryKey: ['get-user'],
  queryFn: () =>fetch('/api/user').then((res) => res.json())
})
if (isLoading) return 'Loading...'
if (error) return 'An error has occurred: ' + error.message
return (
  <div>
    <h1>{data.user.fullName}</h1>
    <h1>{data.user.lastName}</h1>
  </div>
 )
}
```

The useQuery hook is used to retrieve a user from an API. i am extracting just three properties for this hook : data, error, and isLoading. You can use these properties to show the user loading indicators, error messages, or the data itself.

Finally, React Query is an excellent tool for managing asynchronous data in React applications. It simplifies data management, improves performance, and makes handling error states easier. You can build more performant and reliable applications and have a better developer experience by using React Query. I hope this article has given you a good introduction to React Query and inspired you to use it in your own projects.

you can view the full article here [here](https://www.elbarryamine.com/blog/react-query-implementation-and-why-should-you-use-it)

There you have it, perhaps I was able to assist you a little, Thanks for reading

Amine Elbarry signing off 👋