incremental-static-rendering

Incremental static regeneration updates static pages after build without full rebuilds by configuring getStaticProps with revalidate and enabling fallback true to refresh data-driven pages in the background.

On-demand revalidation is a mechanism in Next.js 13+ App Router that incrementally refreshes static pages after build, allowing large sites with frequently changing data to update content quickly without a complete redeploy.

Incremental static generation is ideal for large sites like product catalogs and blogs where data changes frequently, applying on-demand revalidation to add new pages in the background while users browse without requiring full rebuilds.

Fallback true is required for incremental static regeneration because it allows Next.js to add new pages in the background while serving users, ensuring that newly generated static pages appear quickly without blocking the browsing experience.

The best way to avoid full rebuilds when updating a Next.js blog is applying incremental static regeneration, which uses revalidate and on-demand revalidation to refresh existing pages and generate new ones in the background after the initial build.

You should avoid incremental static regeneration if your site requires real-time data or instant updates across all pages simultaneously, because it refreshes pages incrementally in the background rather than immediately upon every content change.