[toast0]

When I've used a CDN, there were separate headers to control the CDN with the same semantics as cache-control... so you can serve the cache-control you want to browsers and control the CDN separately.

If it doesn't feel like it's cached, it probably isn't; but you can't assume the cache-control headers you see are controlling the CDN.

[bragr]

Depends on the Akamai property config which could be anything. IIRC by default it uses the standard cache headers and doesn't strip or rewrite them, although it definitely can.