Re: [squid-users] I want to verify why squid wont cache a specific object.

On 8/20/2012 1:38 AM, Amos Jeffries wrote:
>
> The FFFFFFFF is the file number/name where it is being stored. Since
> this is an erased operation that is always the magic F value.
>
> It is not 1-to-1 related to the object being cacheable. It just means
> the object *currently* stored needs removing. Non-cacheable objects the
> RELEASE immediately follows storage, for cacheable objects being
> replaced the erase of old content immediately follows storage of new
> copies.
OK
>
>
> Since the caching changes between UA. I would assume the player is
> sending some form of no-cache or no-store control in the request
> headers. Set debug section 11,2 if you can and find the players request
> headers.
I have reviewed the headers before using wireshark\tcpdump but couldn't
find anything in them that suppose to change the behavior to the object.

anyway the headers from the debug section are:
##start
2012/08/20 02:00:43.682 kid1| HTTP Client local=54.240.162.191:80
remote=192.168.10.100:60900 FD 32 flags=33
2012/08/20 02:00:43.682 kid1| HTTP Client REQUEST:
---------
GET
/MV5BMTUwMDMzOTQ4MF5BMTFeQW1wNF5BbWU3MDY0MzUzOTQ@.mp4?Expires=1345449755&Signature=igqZatNciNUeCPcPTDUIBC2oX4BN7A1Go5U5h6BHeUo2z0qXyKl~1LQo1MHb8KnVmSob1GSlNs3LAbVuTSCQxSV3FfBBPH~~09CIoIFfZE7lDkBzXcjYBMC757-1OLP1eHHx5TmPNv00dBuoMCN90xlu~uifWzgsYbFNSaQans8_&Key-Pair-Id=APKAILW5I44IHKUN2DYA&hint=flv
HTTP/1.1
Host: video-http.media-imdb.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20100101
Firefox/13.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://www.imdb.com/images/js/jwplayer/5.9/player.swf
##end

this is issued by the browser:
##start
2012/08/20 02:15:25.088 kid1| HTTP Client local=54.240.162.174:80
remote=192.168.10.100:64245 FD 24 flags=33
2012/08/20 02:15:25.088 kid1| HTTP Client REQUEST:
---------
GET
/MV5BMTUwMDMzOTQ4MF5BMTFeQW1wNF5BbWU3MDY0MzUzOTQ@.mp4?Expires=1345450432&Signature=PCnHMyiuodLmW-r1toSrSa7Gs~bJa7Io05AOBksCMCT5HNI2MYYPWtdyHM5W~5N4RtUSaY9SVzU4OlsSpSzGPZG0BD5nvP3RXIv03PqHMUQQo-lzASOC6TY1R3ARrVwgEm5mn3BrRQ4Ce6dwC7x9eGH~XgFNrKqcJCFxmbTwxQ8_&Key-Pair-Id=APKAILW5I44IHKUN2DYA&hint=flv
HTTP/1.1
Host: video-http.media-imdb.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20100101
Firefox/13.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
If-Modified-Since: Wed, 13 Apr 2011 17:18:18 GMT
If-None-Match: "c9164ada101ce1baad52740ec34b2027"
##end

and this is the response:
##start
---------
HTTP/1.1 304 Not Modified
Date: Sun, 19 Aug 2012 23:17:19 GMT
ETag: "c9164ada101ce1baad52740ec34b2027"
Last-Modified: Wed, 13 Apr 2011 17:18:18 GMT
Age: 47447
X-Cache: Hit from cloudfront
X-Amz-Cf-Id: LnmQ_CfVeSreDlbL_vz0gFVPGkRuy5O6ajlxmfsoBjdAUkcn6ff3zw==
X-Cache: MISS from proxy
Via: 1.0 add6ceb4822d467e68d27b0dbaa26dae.cloudfront.net (CloudFront),
1.1 proxy (squid/3.2.1)
Connection: keep-alive
##end

A request from IE 9:
##start
2012/08/20 02:21:12.594 kid1| HTTP Client local=54.240.162.120:80
remote=192.168.10.100:65326 FD 22 flags=33
2012/08/20 02:21:12.595 kid1| HTTP Client REQUEST:
---------
GET
/MV5BMTUwMDMzOTQ4MF5BMTFeQW1wNF5BbWU3MDY0MzUzOTQ@.mp4?Expires=1345450432&Signature=PCnHMyiuodLmW-r1toSrSa7Gs~bJa7Io05AOBksCMCT5HNI2MYYPWtdyHM5W~5N4RtUSaY9SVzU4OlsSpSzGPZG0BD5nvP3RXIv03PqHMUQQo-lzASOC6TY1R3ARrVwgEm5mn3BrRQ4Ce6dwC7x9eGH~XgFNrKqcJCFxmbTwxQ8_&Key-Pair-Id=APKAILW5I44IHKUN2DYA&hint=flv
HTTP/1.1
Accept: text/html, application/xhtml+xml, */*
Accept-Language: en-US
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64;
Trident/5.0; BOIE9;ENUSMSE)
Accept-Encoding: gzip, deflate
Host: video-http.media-imdb.com
Connection: Keep-Alive
##end

response:
##start
---------
HTTP/1.1 200 OK
x-amz-id-2: 1zQ2Ga1OC41u3SJGOlnpOgxww47S6D/AIBT0KwY/mC1f2mnZx0crlLcLUcdYqxt7
x-amz-request-id: E903CD06E96673AC
Date: Wed, 11 Apr 2012 09:17:57 GMT
Last-Modified: Wed, 13 Apr 2011 17:18:18 GMT
ETag: "c9164ada101ce1baad52740ec34b2027"
Accept-Ranges: bytes
Content-Type: video/mp4
Content-Length: 16586249
Server: AmazonS3
Age: 47796
X-Cache: Hit from cloudfront
X-Amz-Cf-Id: Gdqmd-d1ue_C6EcUXB9HqGsbDP27b9nPQ7JvD1Ph60it6W9Bs6PTdg==
X-Cache: MISS from proxy
Via: 1.0 b99a3a1517181a9079e46ed00e41ddfb.cloudfront.net (CloudFront),
1.1 proxy (squid/3.2.1)
Connection: keep-alive
##end

my naked and armed eye yet to see anything that should affect it.
I tried to see if i can get some data using redbot but it seems like
almost nothing.
the log for the request can be seen here:
http://redbot.org/?id=ZN0UhW

it seems like the server clock is behind a about 10 weeks but the basic
settings should allow more then 60 minutes of caching.

Thanks,
Eliezer

-- 
Eliezer Croitoru
https://proxy
IT consulting for Nonprofit organizations
eliezer <at> ngtech.co.il