Simplify Data Fetching with React Query

A Guide to Leveling Up State Management

Photo by Pankaj Patel on Unsplash

Data loading and caching is crucial for robust web apps. But managing async state across a React codebase can quickly become unwieldy. Enter React Query — a versatile library for fetching, caching, synchronizing and updating server state.

In this post, we’ll explore some key benefits of React Query for taking your data handling to the next level:

Automatic Caching

One of the most useful aspects of React Query is effortless built-in caching of query results. Fetched data is cached client-side so identical requests don’t trigger additional round trips.

For example:

function App() {
const { data } = useQuery('posts', fetchPosts)
return (
 <div>
 {data?.map(post => (
 <Post key={post.id} post={post} />
 ))}
 </div>
 )
}

The first time this component renders, it will fetch posts and cache them locally. But subsequent renders will simply read from cache without refetching!

This caching applies globally across components too. So any usage of the ‘posts’ query will share that cache automatically.

Awesome!

Automatic Refetching