|
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 17.08.2016 20:28, Amos Jeffries пишет: > On 18/08/2016 1:43 a.m., Omid Kosari wrote: >> Why following link is HIT >> >> X-Cache:"HIT from cache1" >> X-Cache-Lookup:"HIT from cache1:3128" >> >> >> http://igcdn-photos-c-a.akamaihd.net/hphotos-ak-xaf1/t51.2885-15/s150x150/e35/13649137_1547514802224163_950421795_n.jpg >> >> but this one is MISS >> >> http://igcdn-photos-a-a.akamaihd.net/hphotos-ak-xaf1/t51.2885-15/s150x150/e35/13649137_1547514802224163_950421795_n.jpg >> > > Because your override-expire tells Squid to ignore the > Cache-Control:max-age expiry details - instead to treat anything 10080 > seconds old as expired. > > Then the override-last-mod tells Squid to ignore the Last-Modified > header, instead to treat everything arriving as being 10080 seconds old. > > When combined they mean that objects are only cacheable for the > remainder of the first second after arrival. When that 0-1 second is > over they are identified as being stale and require revalidation to be used. > > Your options also tell Squid to ignore revalidation ... > You see where this is going? > > > It is most often a bad idea to override cache controls coming from the > server. refresh_pattern is a way to work around broken services or those > which do not send sufficient cache-controls to cache properly. Use with > great care and caution. I do not agree. Many webmasters intentionally set the value in the "no cache" in their own selfish interests. For example, when displaying advertising. Or, even worse, when watching videos - like Youtube. Which leads to the monstrous traffic overspending. Why should we respect them? While they actively oppose us? > > > Amos > > _______________________________________________ > squid-users mailing list > squid-users@xxxxxxxxxxxxxxxxxxxxx > http://lists.squid-cache.org/listinfo/squid-users -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJXtHXiAAoJENNXIZxhPexGueMIAIWGnKWYsEkMPKmCqotCAcxo N+raeePYsVaur/PZFsZgm2I9Dh+K0x2E8s5cYo5kcAcJl+q2Kfe9M1PvTJdvc6AG zOSHzYtZ6e3n/w0f/WkUunSXOX0gWOlqHXvZZTjfm6R1zH8Qw+yx3jWIKQG8TuFP EwSk1fPHfk77sfBXeYcgHPOYHrpGr8ubLsUmfQmrLWTWd5LP6rpFtGvm/pnreX9j ZTOoNjYcqRdC+90Hwg6p6KDCyxSJOkd00fOoCclp4toAiNEwq2mUOOVwlvuL6pTZ Vz97vrus0c2ntcojYPlHmX9/ywzs4vlR1y8J2QAg5HeITvnlv64ZI0Mmt3Enjmc= =l7rO -----END PGP SIGNATURE----- |
Attachment:
0x613DEC46.asc
Description: application/pgp-keys
_______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
