nextjs-build-website-caching

Next.js ISR caching applies a consistent 30-minute revalidation window to landing page routes, serving cached content while regenerating pages in the background to balance performance and content freshness without requiring constant redeploys.

Use SSG vs SSR vs ISR rendering modes based on page behavior: SSG for truly static pages, ISR for content-driven CMS updates, and SSR for user-specific or highly dynamic interactions to ensure optimal rendering mode selection.

On-demand revalidation uses a dedicated endpoint triggered by CMS publish events, utilizing a secret header for security verification to immediately update Next.js cache instead of waiting for the next scheduled 30-minute revalidation window.

Apply a consistent 30-minute ISR default caching strategy across all Next.js page.tsx files, with optional fetch tagging and on-demand revalidation, to standardize marketing content updates and contact form interactions.

Landing pages re-render on every request when no caching strategy is applied. Fix this by implementing a 30-minute ISR revalidate window with on-demand revalidation to prevent unnecessary re-renders while maintaining content freshness.

Next.js on-demand revalidation requires a secret header for endpoint verification, ensuring only authorized CMS publish events or contact form submissions trigger cache invalidation and immediate page regeneration.