Что сказать
«Next four caches stack. Request Memoization dedupes identical fetches one render — React, always on. Data Cache persists fetch across requests — Next 15 opt-in: uncached unless force-cache, revalidate, tag. Full Route Cache rendered HTML + RSC static routes — dynamic API cookies/headers/searchParams opts whole route out. Router Cache client RSC payloads — instant navigation. Stale debug — which layer holds it. Invalidation — tag-based revalidateTag from mutation over time-based — fresh and fast.»
Итог
Four-layer cache pitch: identify layer + prefer tag invalidation.
Next.js · middle · сложность 5