[squid-users] Yet another store_id question HIT MISS

[Yuri Voinov]

-----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 at lists.squid-cache.org
> 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-----

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.squid-cache.org/pipermail/squid-users/attachments/20160817/6e522e84/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0x613DEC46.asc
Type: application/pgp-keys
Size: 2437 bytes
Desc: not available
URL: <http://lists.squid-cache.org/pipermail/squid-users/attachments/20160817/6e522e84/attachment-0001.key>