Deconstructing the Request Lifecycle in Sitecore Headless – Part 2: SSG and ISR Modes in Next.js

In my previous post, we explored the request lifecycle in a Sitecore headless application using Next.js, focusing on how Server Side Rendering (SSR) works in tandem with Sitecore’s Layout Service and the Next.js middleware layer.. But that’s only one part of the story.

This follow-up post dives into Static Site Generation (SSG) and Incremental Static Regeneration (ISR) – two powerful rendering modes offered by Next.js that can significantly boost performance and scalability when used appropriately in headless Sitecore applications.

Why SSG and ISR Matter?

In Sitecore XM Cloud-based headless implementations, choosing the right rendering strategy is crucial for balancing performance, scalability, and content freshness. Static Site Generation (SSG) pre-renders pages at build time, producing static HTML that can be instantly served via a CDN. This significantly reduces time-to-first-byte (TTFB), minimizes server load, and is ideal for stable content like landing pages, blogs, and listing pages.

Incremental ...