On Wed, 9 Nov 2005, Leandro Scott R.Z. Jacques wrote:
And how squid behaves with a pragma: no-cache, it
doesn't cache the object and a request for that object
has a TCP_MISS as result or it caches the object then
a request for it must be validated and has a
TCP_CLIENT_REFRESH_MISS as result?
Squid doesn't cache objects with either Pragma: no-cache, or
Cache-Control: no-cache, no-store or private.
For compatibility with old HTTP/1.0 applications the following are
recommended on a uncacheable response
Expires: now (same as Date)
Pragma: no-cache
Cache-Control: no-cache, no-store
"Expires: now" has always been a standard method to mark a response as
stale, which in most caches also prevents it from getting cached (no
guarantee however).
"Pragma: no-cache" is understood by most as "not cacheable" even if never
part of any standard.
"Cache-Control: no-cache" is understood by many (RFC2068), but has
slightly different meaning in current standard.
"Cache-Control: no-store" is understood by newer ones (RFC2616).
Regards
Henrik
