Glossary term
What is stale-while-revalidate? Meaning for developers
Serve the old cached answer now and fetch a fresh one in the background so nobody waits.
Learn it properly · Next.js App RouterLesson 2: Data Fetching and Caching in the App RouterFetching in Server Components, parallel versus sequential requests, the caching layers, revalidation, and the current Next.js caching model from the bundled docs.