SWR
SWR (stale-while-revalidate) is a React Hooks library for data fetching that provides a caching strategy to optimize performance and user experience. It automatically caches data, revalidates it in the background when needed, and handles loading and error states efficiently. Developed by Vercel, it's designed to work seamlessly with Next.js and other React-based applications.
Developers should use SWR when building React applications that require real-time or frequently updated data, such as dashboards, social media feeds, or e-commerce sites, as it reduces unnecessary network requests and improves responsiveness. It's particularly useful in scenarios where data consistency and fast UI updates are critical, as it provides built-in features like revalidation on focus, polling, and optimistic updates.