Next.js manages CDN caching behavior via tailored `Cache-Control` headers:
- **Static Assets (`/_next/static/...`)**: Served with `Cache-Control: public, max-age=31536000, immutable` because file names include content hashes.
- **Dynamic / Revalidated Pages**: Served with `s-maxage=3600, stale-while-revalidate=59`, instructing CDNs to serve stale content while asynchronously fetching updated pages from origin in the background.

Q61: How does Next.js handle HTTP Cache-Control headers for static vs dynamic assets at the CDN layer?

Q62: How do you implement Server-Sent Events (SSE) streaming inside App Router Route Handlers?

Q60: What architectural strategies minimize Serverless Function Cold Starts in Next.js deployments?

From App Router foundations and SSR/SSG rendering modes to React Server Components, Server Actions, Middleware, and Caching Architecture

Next.js Progressive Master Interview Question Bank

Q61: How does Next.js handle HTTP Cache-Control headers for static vs dynamic assets at the CDN layer? - Next.js Progressive Master Interview Question Bank

Q61: How does Next.js handle HTTP Cache-Control headers for static vs dynamic assets at the CDN layer?

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