How to Implement Revalidation in Next.js for Fresh Data Without Performance Loss

Incremental Static Regeneration (ISR) in Next.js allows static pages to be updated without requiring a full site rebuild. ISR regenerates pages in the background after a specified time period, maintaining fast load times while keeping content fresh. This feature is ideal for frequently updated content that doesn't need real-time changes, such as news websites or e-commerce product pages. Developers can implement ISR using the revalidate property in getStaticProps, specifying how often pages should be regenerated.