Re: 304 and Age

Amos Jeffries wrote:
> 
> IMO, the Age header is not useful in this case. Since the requestor 
> already appears to have a copy of the representation, thus already
> has or can calculate its Age.
>

Sure, if the cache validates with the origin, but what if that isn't
the case?

Client has representation, reloads.  Cache also has representation,
but responds 304 without validating to the origin.  Without Age, how
does client know if the cache's 304 is referring to a newer or older
representation than the one the client already has?

-Eric