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?

SWR improves data fetching by providing features like caching, revalidation, focus tracking, and automatic retries, making it efficient.

Can you show me a simple example of using SWR?

Sure! Here's a basic 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?

The benefits include automatic caching, reduced loading times, and improved user experience through features like revalidation and focus tracking.