How Caching Makes Websites Feel Faster

This episode explores how reusable copies reduce distance and repeated work without exposing security-sensitive instructions. The story keeps the mechanisms clear and the research grounded for a casual listener. Inside this episode: - The cost of fetching again - Freshness - Revalidation - Cache keys - The browser cache Sources include Internet Engineering Task Force, RFC 9111, RFC 9111, and MDN, HTTP caching. This episode is a researched narrative summary. Historical records may be incomplete, translated differently, or interpreted differently by scholars. We distinguish documented facts, estimates, disputed interpretations, and later stories where material. Corrections are logged and incorporated into future editions. Follow The Internet in Practice for more researched stories about the infrastructure of the internet.