Bonus

HTTP cache policy simulator

Visualize fresh, stale, and expired response behavior

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The prompt

Build an HTTP cache-policy simulator with Tailwind CSS. Include controls for public or private caching, max-age, stale-while-revalidate, and immutable behavior. Show the generated Cache-Control header, a request-age slider, response outcome badge, browser and CDN decision steps, and a horizontal freshness timeline. Add JavaScript that recalculates HIT, STALE, REVALIDATE, or MISS behavior from the policy, updates the header, and explains each decision in plain language.

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Build an HTTP cache-policy simulator with Tailwind CSS. Include controls for public or private caching, max-age, stale-while-revalidate, and immutable behavior. Show the generated Cache-Control header, a request-age slider, response outcome badge, browser and CDN decision steps, and a horizontal freshness timeline. Add JavaScript that recalculates HIT, STALE, REVALIDATE, or MISS behavior from the policy, updates the header, and explains each decision in plain language.