What is SWR in Next.js?

What is SWR in Next.js?

SWR is a React Hooks library for data fetching, developed by Vercel, that helps manage remote data in Next.js applications.

How does SWR improve data fetching in my app?

SWR provides features like caching, revalidation, and automatic updates, which enhance performance and user experience.

Can you show me a basic example of using SWR?

Sure! Here's a simple example:

import useSWR from 'swr';

const fetcher = url => fetch(url).then(res => res.json());

function Profile() {
  const { data, error } = useSWR('/api/user', fetcher);

  if (error) return <div>Failed to load</div>;
  if (!data) return <div>Loading...</div>;
  return <div>Hello, {data.name}!</div>;
}

What are the benefits of using SWR over traditional data fetching methods?

SWR offers built-in caching, automatic re-fetching, and a simpler API, making it easier to manage data states compared to traditional methods.