<b>This week in caching: who wins when headers fight</b>

<b>This week in caching: who wins when headers fight</b>
Three reads on CDN vs browser directive precedence — a top source of "why won't this cache" tickets.
— <b>s-maxage overrides max-age for shared caches</b> — set a long edge TTL and a short browser TTL in one header: <code>max-age=0, s-maxage=86400</code>.
— <b>Surrogate-Control beats Cache-Control at the CDN</b> — Fastly/Akamai read it first and strip it before the browser sees it; decouples edge from client policy entirely.
— <b>CDN-Cache-Control is the new standard</b> — the targeted header (RFC 9213) lets you address specific CDN layers without affecting browsers.
<b>Bookmark:</b> RFC 9213 explainer — the targeted-Cache-Control header is finally untangling this mess.