"HTTP/1.1 specification defines a "freshness lifetime" for a response if a "Last-Modified" is present.
> Also, if the response does have a Last-Modified time, the heuristic expiration value SHOULD be no more than some fraction of the interval since that time. A typical setting of this fraction might be 10%.
> The calculation to determine if a response has expired is quite simple:
response_is_fresh = (freshness_lifetime > current_age)
Does NSURLSession support it? If so, can the modifier, i.e. 10%, be adjusted?
Does NSURLSession support it?
If so, can the modifier, i.e. 10%, be adjusted?
No. It always uses the 10% value recommended by the RFC.
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"