Browser Cache and HTTP Caching: Understand What Gets Reused
Follow one resource from its first download to a cache hit, a validation request, and an update—and learn which browser cache is involved.
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HTTP caching
Explore the http caching questions that connect these guides.
HTTP caching gives responses rules for storage, validation, and reuse. It operates alongside other browser storage rather than replacing it. This collection follows the response evidence and explains why a network request, a local hit, and a validation can tell different stories.
For a useful exercise, choose one resource and record its URL, relevant headers, and test conditions. Avoid changing several settings at once. Follow the article into the browser guide for the distinction between the HTTP cache and application-managed stores, then connect those ideas to an API response policy.
Articles about http caching
Take the next step.
Start with the Web Browser Cache Index guide to place the terminology in context. Then explore Cache Index API for a connected design question.
Read across the index.
A topic can cross several systems. Browse the complete Lab for the surrounding articles, or use the 22-topic directory to find a different entry point.