> Can someone be so kind to explain me if the default values for the
> refresh_patern (0 20 4320) violates any HTTP specifications?

One thing to bear in mind when trying to cache very aggressively is 
that at some point your users will simply do shift reload in 
Netscape, which will increase your traffic.  Once that happens you 
will be forced to treat this as a revalidate request (violating the 
protocol) and will start losing customers.  (In particular, they are 
likely to do shift reload for everything once they suspect you are 
serving very stale data.)

A better approach would be for them to use max-age, to simply defeat 
your refresh pattern put allow conditional GETs, but that is not 
normally available in browsers and shift reload is easier anyway.

(An other point is that many sites don't want you to cache.)


-- 
David Woolley - Office: David Woolley <[EMAIL PROTECTED]>
BTS             Home: <[EMAIL PROTECTED]>
Wallington      TQ 2887 6421
England         51  21' 44" N,  00  09' 01" W (WGS 84)

Reply via email to