TOPIC OVERVIEW

nextjs/SSG

Building the HTML once, at build time, so every request gets it instantly.

10 QuestionsIntermediateHigh Priority ~11 min read

Static Site Generation pre-renders a page's HTML once at build time, rather than per request. In the App Router, this is actually the default — any route that doesn't read request-specific data (cookies, headers, search params) or call a dynamic function is automatically rendered statically, with no extra configuration needed to opt in.

generateStaticParams lets you pre-render specific values for a dynamic route at build time — every blog post slug, every product ID — turning a whole set of dynamic pages into static ones. Incremental Static Regeneration, controlled via the revalidate option, extends this further: a statically generated page can be regenerated in the background after a set time interval, without requiring a full site rebuild, combining SSG's speed with data that's allowed to go stale and quietly refresh.

What you'll walk away knowing

Why SSG produces the fastest possible response — HTML that's already built before any request arrives

What automatically makes a route static versus forces it into dynamic rendering

How generateStaticParams pre-renders specific dynamic route params at build time

How Incremental Static Regeneration lets static pages refresh without a full site rebuild

1How does SSG differ from SSR and CSR?Intermediate 2Discuss briefly getStaticPathsIntermediate 3What is Partial Prerendering (PPR) and how does it relate to SSG?Intermediate 4What are the trade-offs between full static export (output: 'export') vs standard SSG with ISR?Intermediate 5How does Next.js handle cache invalidation in ISR, and what are the pitfalls?Advanced 6How would you debug a page that should be static but is being rendered dynamically?Intermediate 7What types of pages are best suited for SSG?Advanced 8How does SSG interact with middleware in Next.js?Intermediate 9What are the fallback options in getStaticPaths?Intermediate 10What is are different revalidation strategies in Incremental Static Regeneration (ISR)?Intermediate 11What is Incremental Static Regeneration (ISR)?Intermediate 12What are the benefits of Static Site Generation in Next.js?Intermediate 13How do you avoid build-time data staleness in SSG?Intermediate 14How would you architect SSG for a site with 100,000+ pages?Advanced 15What is static site generation (SSG) in Next.js?Intermediate 16Discuss getStaticProps in briefIntermediate 17What is generateStaticParams in the App Router?Intermediate 18How do we generate static pages in a NextJS project with the app router?Intermediate 19How does SSG work in a monorepo or multi-zone Next.js architecture?Advanced 20What is the difference between revalidatePath and revalidateTag? When do you use each?Intermediate

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