Caching & Revalidation Strategies

Next.js Caching Layers

1. Request Memoization — deduplicates identical fetch() calls in one render tree
2. Data Cache — persists fetch results across requests and deployments
3. Full Route Cache — caches rendered HTML & RSC payloads at build time
4. Router Cache — client-side cache of visited route segments

Revalidation Options

• Time-based: next: { revalidate: 60 }
• On-demand: revalidatePath() and revalidateTag() in Server Actions