[squid-users] Re: object cached with certainty

Some tcpdump caps. I can try to access it a thousand times, I get
always the same answers, with the final MISS from the proxy.
192.168.1.254 is the proxy, 192.168.1.33 is one client, 66.6.40.40.80
is the website.

17:32:34.885281 IP 192.168.1.33.38721 > 192.168.1.254.3128: Flags
[P.], seq 416689318:416689905, ack 3648482704, win 64300, length 587
GET http://lustik.tumblr.com/ HTTP/1.1
Host: lustik.tumblr.com
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Firefox/24.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: bo-BO,pt;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Cookie: __qca=P0-513169740-1391703940250;
_ga=GA1.2.1874150165.1391703941;
__utma=189990958.1874150165.1391703941.1392235212.1392236957.9;
Connection: keep-alive

17:32:35.115954 IP 192.168.1.254.39555 > 66.6.40.40.80: Flags [P.],
seq 1:666, ack 1, win 29, options [nop,nop,TS val 2144186114 ecr
359895267], length 665
GET / HTTP/1.1
Host: lustik.tumblr.com
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Firefox/24.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: bo-BO,pt;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Cookie: __qca=P0-513169740-1391703940250;
_ga=GA1.2.1874150165.1391703941;
__utma=189990958.1874150165.1391703941.1392235212.1392236957.9;
Via: 1.1 proxy02.example.bo (squid)
X-Forwarded-For: 192.168.1.33
Cache-Control: max-age=432000
Connection: keep-alive

17:32:36.098282 IP 66.6.40.40.80 > 192.168.1.254.39555: Flags [.], seq
1:1449, ack 666, win 31, options [nop,nop,TS val 359896254 ecr
2144186114], length 1448
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
P3P: CP="ALL ADM DEV PSAi COM OUR OTRo STP IND ONL"
X-Tumblr-User: lustik
X-Tumblr-Pixel-0: http://www.tumblr.com/impixu?T=1392237155&J=eyJ0eXBlIjoidXJsIi
X-Tumblr-Pixel-1: NjQyIiwicm9vdF9wb3N0aWQiOiI3NDY0ODA2Njg2NiIsInBvc3RpZCI6Ijc2ND
X-Tumblr-Pixel-2: 9zdGlkIjoiNzY0MTYxODQwODIiLCJibG9naWQiOiI2MDE1Nzc1Iiwic291cmNl
X-Tumblr-Pixel-3: dXJjZSI6MzN9LHsicm9vdF9ibG9naWQiOiI1NzU0MTgiLCJyb290X3Bvc3RpZC
X-Tumblr-Pixel: 4
Link: <http://31.media.tumblr.com/avatar_07ff40170912_128.png>; rel=icon
X-UA-Compatible: IE=Edge,chrome=1
Content-Encoding: gzip
X-UA-Device: desktop
Vary: X-UA-Device
Content-Length: 14257
Accept-Ranges: bytes
Date: Wed, 12 Feb 2014 20:32:36 GMT
Connection: close

17:32:36.098761 IP 192.168.1.254.3128 > 192.168.1.33.38721: Flags [.],
seq 1:1461, ack 587, win 49640, length 1460
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
P3P: CP="ALL ADM DEV PSAi COM OUR OTRo STP IND ONL"
X-Tumblr-User: lustik
X-Tumblr-Pixel-0:
http://www.tumblr.com/impixu?T=1392237155&J=eyJ0eXBlIjoidXJsIiw
X-Tumblr-Pixel-1:
NjQyIiwicm9vdF9wb3N0aWQiOiI3NDY0ODA2Njg2NiIsInBvc3RpZCI6Ijc2NDM
X-Tumblr-Pixel-2:
9zdGlkIjoiNzY0MTYxODQwODIiLCJibG9naWQiOiI2MDE1Nzc1Iiwic291cmNlI
X-Tumblr-Pixel-3:
dXJjZSI6MzN9LHsicm9vdF9ibG9naWQiOiI1NzU0MTgiLCJyb290X3Bvc3RpZCI
X-Tumblr-Pixel: 4
Link: <http://31.media.tumblr.com/avatar_07ff40170912_128.png>; rel=icon
X-UA-Compatible: IE=Edge,chrome=1
Content-Encoding: gzip
X-UA-Device: desktop
Vary: X-UA-Device
Content-Length: 14257
Accept-Ranges: bytes
Date: Wed, 12 Feb 2014 20:32:36 GMT
X-Cache: MISS from proxy02.example.bo
Via: 1.1 proxy02.example.bo (squid)
Connection: keep-alive

On Wed, Feb 12, 2014 at 5:47 PM, Carlos Defoe <carlosdefoe_at_gmail.com> wrote:
> Hello,
>
> is there a way to be sure that some objects will be cached?
>
> I'm trying to cache this image blog:
> http://lustik.tumblr.com
>
> I configured one refresh_pattern line to match all tumblr, with some
> options that, as far as I undestood, will agressively try to cache it.
>
> ####
> # REFRESH_PATTERNS
> ####
> refresh_pattern -i tumblr.com 2880 90% 7200 override-expire
> override-lastmod ignore-no-store ignore-reload ignore-private
> # Add any of your own refresh_pattern entries above these.
> refresh_pattern ^ftp: 1440 20% 10080
> refresh_pattern ^gopher: 1440 0% 1440
> refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
> refresh_pattern . 0 20% 4320
>
> No luck. All I get with this is always TCP_MISS/200, for all objects. E.g:
> TCP_MISS/200 172504 GET
> http://24.media.tumblr.com/967c977f757bc64f9e10184acc934bd2/tumblr_n0qsckwQA31qztdg6o4_500.jpg
>
> I tried to load that page on different browsers, and different
> machines, but the objects are never cached. Why is that? What can I
> do?
>
> If my disk cache is already full, the behavior should be to keep the
> objects that are already stored, or delete the oldest and store those
> new? I mean, this could be caused by a full cache dir?
>
> Thanks,
> Carlos
Received on Wed Feb 12 2014 - 21:17:07 MST