Problem Statement
What are the different ways to fetch data in Next.js and when should you use each approach?
Explanation
Use getStaticProps for data that can be fetched at build time and shared across users for best performance with SSG, getServerSideProps for request-specific or frequently changing data that must be fresh on every visit, client-side fetching with useEffect or SWR for data that doesn't need SEO or can load after initial render like user dashboards or interactive features, and API routes for backend logic that needs server-side execution. In App Router, use Server Components to fetch data directly in components on the server eliminating the need for getStaticProps or getServerSideProps, use fetch with next revalidate option for ISR-like behavior, and Client Components with 'use client' for interactive data fetching. Choose based on requirements for SEO, freshness, personalization, and performance, with server-side approaches for SEO-critical content and client-side for post-render interactivity.
Practice Sets
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