Caching · Multiple choice

You want CDNs to cache a page for a day but browsers for only a minute. Which header does that?

Options

Cache-Control: public, max-age=60, s-maxage=86400 Correct
Cache-Control: private, max-age=86400
Cache-Control: no-store
Cache-Control: no-cache, max-age=86400

Why

s-maxage applies only to shared caches such as CDNs and overrides max-age there. private forbids shared caches, no-store forbids all caching, and no-cache makes every cache revalidate before each use.

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