Q11. How do the different Next.js caches and revalidation layers work?
Next.js has several cache layers. The Data Cache stores individual fetch results and can be tagged. The Full Route Cache stores rendered HTML and RSC payloads for static ...
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Q12. How does a CDN improve performance and how would you design for it?
A content delivery network caches content on edge servers close to users, reducing latency and offloading the origin. How it works: DNS or anycast routes the user to a ne...
Q13. How do fetch cache options work in the App Router?
The `fetch` API in server components supports caching controls via `{ next: { revalidate } }` and cache modes like `cache: 'no-store'` or `cache: 'force-cache'`. Use `no-...
Q14. How cache works in Next.js with the Pages Router?
Next.js uses a built-in caching mechanism for static assets and API routes. You can also implement custom caching strategies using HTTP headers or libraries like `next-ca...
Q15. Cache revalidation in Next.js with the Pages Router?
Cache revalidation can be handled using the `revalidate` option in `getStaticProps` or by setting appropriate HTTP headers in API routes. - **Using `revalidate`**: Automa...