RE: [squid-users] Dynamic content caching in Squid 3.2 vs 3.1 from Jon Schneider on 2013-03-15 (squid-users)

From: Jon Schneider <Jon.Schneider_at_Yardi.Com>
Date: Fri, 15 Mar 2013 16:42:02 +0000

Thanks for the response Amos,

I think I was so focused on trying to figure out why 3.2 was returning differently than 3.1 that I didn't take note of the odd Last-Modified date that was returning in the previous example. I have included a clearer example below with cache settings remaining the same just a different URL. I hit each Squid server a few times to provide opportunity to cache. In this example all the dates and times make sense, and I believe the 3.2 instance should be caching the object, but it isn't.

Origin Server:
[root@cache1 portalsquid]# siege -b -r 1 -c 1 -g http://testsite.domain.com/__utm.js.aspx
HTTP/1.1 200 OK
Cache-Control: public, max-age=7200
Content-Type: text/javascript; charset=utf-8
Content-Encoding: gzip
Expires: Fri, 15 Mar 2013 17:35:17 GMT
Last-Modified: Fri, 15 Mar 2013 15:35:17 GMT
ETag: "71B76C2B36A7E48318E27D6B5ED98F3A"
Vary: Accept-Encoding
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
X-Server: IISSVR
X-Powered-By: ASP.NET
Date: Fri, 15 Mar 2013 15:35:17 GMT
Connection: close
Content-Length: 6157

Squid 3.1
[root@cache1 portalsquid]# siege -b -r 1 -c 1 -g http://testsite.domain.com/__utm.js.aspx
HTTP/1.0 200 OK
Cache-Control: public, max-age=7200
Content-Type: text/javascript; charset=utf-8
Content-Encoding: gzip
Expires: Fri, 15 Mar 2013 17:35:42 GMT
Last-Modified: Fri, 15 Mar 2013 15:35:42 GMT
ETag: "71B76C2B36A7E48318E27D6B5ED98F3A"
Vary: Accept-Encoding
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
X-Server: IISSVR
X-Powered-By: ASP.NET
Date: Fri, 15 Mar 2013 15:35:42 GMT
Content-Length: 6157
Age: 2
X-Cache: HIT from cache2.domain.com
X-Cache-Lookup: HIT from cache2.domain.com:80
Connection: close

Squid 3.2
[root@cache1 portalsquid]# siege -b -r 1 -c 1 -g http://testsite.domain.com/__utm.js.aspx
HTTP/1.1 200 OK
Cache-Control: public, max-age=7200
Content-Type: text/javascript; charset=utf-8
Content-Encoding: gzip
Expires: Fri, 15 Mar 2013 17:34:38 GMT
Last-Modified: Fri, 15 Mar 2013 15:34:38 GMT
ETag: "71B76C2B36A7E48318E27D6B5ED98F3A"
Vary: Accept-Encoding
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
X-Server: IISSVR
X-Powered-By: ASP.NET
Date: Fri, 15 Mar 2013 15:34:38 GMT
Content-Length: 6157
X-Cache: MISS from cache1.domain.com
X-Cache-Lookup: MISS from cache1.domain.com:80
Connection: close

Cache.log from 3.2 instance:

2013/03/15 09:34:38.323 kid1| TcpAcceptor.cc(190) doAccept: New connection on FD 12
2013/03/15 09:34:38.323 kid1| TcpAcceptor.cc(265) acceptNext: connection on local=192.168.5.183:80 remote=[::] FD 12 flags=9
2013/03/15 09:34:38.324 kid1| client_side.cc(2298) parseHttpRequest: HTTP Client local=192.168.5.183:80 remote=192.168.5.183:45831 FD 19 flags=1
2013/03/15 09:34:38.324 kid1| client_side.cc(2299) parseHttpRequest: HTTP Client REQUEST:
---------
GET /__utm.js.aspx HTTP/1.1^M
Host: testsite.domain.com^M
Accept: */*^M
Accept-Encoding: gzip^M
User-Agent: JoeDog/1.00 [en] (X11; I; Siege 2.72)^M
Connection: close^M
^M

----------
2013/03/15 09:34:38.324 kid1| client_side_request.cc(760) clientAccessCheckDone: The request GET http://testsite.domain.com/__utm.js.aspx is 1, because it matched 'all'
2013/03/15 09:34:38.324 kid1| client_side_request.cc(734) clientAccessCheck2: No adapted_http_access configuration. default: ALLOW
2013/03/15 09:34:38.324 kid1| client_side_request.cc(760) clientAccessCheckDone: The request GET http://testsite.domain.com/__utm.js.aspx is 1, because it matched 'all'
2013/03/15 09:34:38.324 kid1| forward.cc(103) FwdState: Forwarding client request local=192.168.5.183:80 remote=192.168.5.183:45831 FD 19 flags=1, url=http://testsite.domain.com/__utm.js.aspx
2013/03/15 09:34:38.324 kid1| peer_select.cc(271) peerSelectDnsPaths: Find IP destination for: http://testsite.domain.com/__utm.js.aspx' via origin.portal.domain.com
2013/03/15 09:34:38.325 kid1| peer_select.cc(271) peerSelectDnsPaths: Find IP destination for: http://testsite.domain.com/__utm.js.aspx' via origin.portal.domain.com
2013/03/15 09:34:38.325 kid1| peer_select.cc(298) peerSelectDnsPaths: Found sources for 'http://testsite.domain.com/__utm.js.aspx'
2013/03/15 09:34:38.325 kid1| peer_select.cc(299) peerSelectDnsPaths: always_direct = 0
2013/03/15 09:34:38.325 kid1| peer_select.cc(300) peerSelectDnsPaths: never_direct = 0
2013/03/15 09:34:38.325 kid1| peer_select.cc(309) peerSelectDnsPaths: cache_peer = local=0.0.0.0 remote=192.168.5.20:80 flags=1
2013/03/15 09:34:38.325 kid1| peer_select.cc(309) peerSelectDnsPaths: cache_peer = local=0.0.0.0 remote=192.168.5.20:80 flags=1
2013/03/15 09:34:38.325 kid1| peer_select.cc(311) peerSelectDnsPaths: timedout = 0
2013/03/15 09:34:38.325 kid1| http.cc(2177) sendRequest: HTTP Server local=192.168.5.183:51705 remote=192.168.5.20:80 FD 23 flags=1
2013/03/15 09:34:38.325 kid1| http.cc(2178) sendRequest: HTTP Server REQUEST:
---------
GET /__utm.js.aspx HTTP/1.1^M
Host: testsite.domain.com^M
Accept: */*^M
Accept-Encoding: gzip^M
User-Agent: JoeDog/1.00 [en] (X11; I; Siege 2.72)^M
Surrogate-Capability: cache1.domain.com="Surrogate/1.0 ESI/1.0"^M
X-Forwarded-For: 192.168.5.183^M
Cache-Control: max-age=259200^M
Connection: keep-alive^M
^M

----------
2013/03/15 09:34:38.336 kid1| ctx: enter level 0: 'http://testsite.domain.com/__utm.js.aspx'
2013/03/15 09:34:38.336 kid1| http.cc(732) processReplyHeader: HTTP Server local=192.168.5.183:51705 remote=192.168.5.20:80 FD 23 flags=1
2013/03/15 09:34:38.336 kid1| http.cc(733) processReplyHeader: HTTP Server REPLY:
---------
HTTP/1.1 200 OK^M
Cache-Control: public, max-age=7200^M
Content-Type: text/javascript; charset=utf-8^M
Content-Encoding: gzip^M
Expires: Fri, 15 Mar 2013 17:34:38 GMT^M
Last-Modified: Fri, 15 Mar 2013 15:34:38 GMT^M
ETag: "71B76C2B36A7E48318E27D6B5ED98F3A"^M
Vary: Accept-Encoding^M
Server: Microsoft-IIS/7.5^M
X-AspNet-Version: 4.0.30319^M
X-Server: IISSVR^M
X-Powered-By: ASP.NET^M
Date: Fri, 15 Mar 2013 15:34:38 GMT^M
Content-Length: 6157^M
^M
^_<8b>^H
----------
HTTP/1.1 200 OK^M
Cache-Control: public, max-age=7200^M
Content-Type: text/javascript; charset=utf-8^M
Content-Encoding: gzip^M
Expires: Fri, 15 Mar 2013 17:34:38 GMT^M
Last-Modified: Fri, 15 Mar 2013 15:34:38 GMT^M
ETag: "71B76C2B36A7E48318E27D6B5ED98F3A"^M
Vary: Accept-Encoding^M
Server: Microsoft-IIS/7.5^M
X-AspNet-Version: 4.0.30319^M
X-Server: IISSVR^M
X-Powered-By: ASP.NET^M
Date: Fri, 15 Mar 2013 15:34:38 GMT^M
Content-Length: 6157^M
X-Cache: MISS from cache1.domain.com^M
X-Cache-Lookup: MISS from cache1.domain.com:80^M
Connection: close^M
^M

----------
2013/03/15 09:34:38.336 kid1| store_io.cc(33) storeCreate: storeCreate: Selected dir 0 for -1_at_-1=0/2/1/1
2013/03/15 09:34:38.337 kid1| client_side.cc(764) swanSong: local=192.168.5.183:80 remote=192.168.5.183:45831 flags=1

Thanks,
Jon

-----Original Message-----
From: Amos Jeffries [mailto:squid3_at_treenet.co.nz]
Sent: Thursday, March 14, 2013 3:49 PM
To: squid-users_at_squid-cache.org
Subject: Re: [squid-users] Dynamic content caching in Squid 3.2 vs 3.1

On 15/03/2013 6:59 a.m., Jon Schneider wrote:
> I have setup squid 3.2.7 in a test environment in preparation to roll it out to production, however I have noticed a difference in caching behavior that I have as of yet been unable to resolve. The squid config files are almost identical with the exception of two config lines that are now obsolete in 3.2. The refresh patterns and ACL's are all exactly the same.
>
> After some testing it appears that the 3.2 instance is only caching images, virtually everything else results in a miss. In the 3.1 instance almost everything returns as a hit with very few misses. When going through the list of everything that is a miss in the 3.2 instance that is a hit in the 3.1 instance it all seems to be either dynamic or possibly dynamic content. Virtually anything that does or could have a '?' at the end does not seem to get cached in 3.2. This results in page times of about twice as log with the 3.2 instance.

That "or could have a ?" is a big clue #1 that '?' is *not* involved.

> Current refresh patterns look like this:
>
> refresh_pattern \.(css|gif|ico|jpg|jpeg|js|swf|xsl|xslt) 5 20% 4320
> reload-into-ims #refresh_pattern .(\?.*)?$ 4320 20% 4320
> reload-into-ims refresh_pattern \.(axd|cssx|svg|swfx|img) 0 100% 4320
> reload-into-ims refresh_pattern . 0 20% 4320 reload-into-ims

Notice the maximum Age time in all these heuristics is 4320 minutes.

> I have tried almost everything is it simply refuses to cache the same content as 3.1 is caching.
>
> I am using siege to do the testing, here is an example output of the header information, first one is from the 3.2 server, second is from the 3.1 server:
>
> [root_at_test squid_test]# siege -b -r 1 -c 1 -g
> https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/
> Shared/Util/CookieUtils.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw
> %3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNE
> FOaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=277d042c485ccce23a52
> 747953c2d6b588802a197d209b50608d338da3bf0e01
> GET /Shared/Util/CookieUtils.js?__v=1363031409 HTTP/1.0
> Host: testsite.domain.com
> Accept: */*
> Accept-Encoding: *
> User-Agent: JoeDog/1.00 [en] (X11; I; Siege 2.72)
> Connection: close
>
>
> HTTP/1.1 200 OK
> Cache-Control: max-age=604800
> Last-Modified: Thu, 05 May 2005 20:51:40 GMT
> Date: Tue, 12 Mar 2013 22:49:23 GMT

The above is a big clue #2 that 3.2 is operating correctly.

Squid is not permitted to store the object more than 604800 seconds (7
days) past its creation date of 5 May 2005.
This is effectively the same as sending the header: Expires: Thu, 12 May 2005 20:51:40 GMT

> Content-Length: 608
> X-Cache: MISS from cache1.domain.com
> X-Cache-Lookup: MISS from cache1.domain.com:80
> Connection: close
>
> [root_at_test squid_test]# siege -b -r 1 -c 1 -g
> https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/
> Shared/Util/CookieUtils.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw
> %3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNE
> FOaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=277d042c485ccce23a52
> 747953c2d6b588802a197d209b50608d338da3bf0e01
> GET /Shared/Util/CookieUtils.js?__v=1363031409 HTTP/1.0
> Host: testsite.domain.com
> Accept: */*
> Accept-Encoding: *
> User-Agent: JoeDog/1.00 [en] (X11; I; Siege 2.72)
> Connection: close
>

Something is a bit screwed up with the HIT that 3.1 was presenting. The big difference is the Age: header existing in this response.

> HTTP/1.0 200 OK
> Cache-Control: max-age=604800
> Last-Modified: Thu, 05 May 2005 20:51:40 GMT
... same storage expiry calculation as above.

> Date: Tue, 12 Mar 2013 19:48:17 GMT
> Age: 10897

... but somehow Squid has the object as being only 10897 seconds old in 2013.
Last-Modified plus Age seconds ==> current Date should be "Thu, 05 May 2005, 23:53:17 GMT"
which is definitely *not* the current testing Date in 2013.

> X-Cache: HIT from cache2.domain.com
> X-Cache-Lookup: HIT from cache2.domain.com:80
> Connection: close

Age of 10897 < max-age of 604800 produes a HIT (wrongly).

NOTE: it is not clear how that Age is getting in there. Whether it is being generated by Squid or IIS, using what server headers? but apparently some header values which are not being sent out to the client properly are involved.

> I have enabled the debug options in the squid.conf and nothing is cache log explains why the objects are not being cached.
>
> Squid access log:
> Squid 3.2:
> 2013-03-14 16:10:12 172.18.12.20 GET
> https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/
> Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw%
> 3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNEF
> OaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f729c8
> 56f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470 origin.portal.domain.com
> HTTP/1.0 "JoeDog/1.00 [en] (X11; I; Siege 2.72)"
> "Domain.SqlXml.LastUpdate=0" - 200 1491 29 -
> TCP_MISS:ROUNDROBIN_PARENT
>
> Squid 3.1:
> 2013-03-14 16:42:36 172.18.12.20 GET
> https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/
> Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw%
> 3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNEF
> OaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f729c8
> 56f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470 - HTTP/1.0 "JoeDog/1.00
> [en] (X11; I; Siege 2.72)" "cTestCookie=1" - 200 1332 0 - TCP_HIT:NONE
>
> Cache.log from 3.2 server:
>
> 2013/03/14 10:10:12.328 kid1| store_io.cc(33) storeCreate:
> storeCreate: Selected dir 0 for -1_at_-1=0/2/1/1
> 2013/03/14 10:10:12.328 kid1| client_side.cc(764) swanSong:
> local=192.168.5.183:80 remote=172.18.12.20:59204 flags=1
> 2013/03/14 10:10:12.329 kid1| TcpAcceptor.cc(190) doAccept: New
> connection on FD 12
> 2013/03/14 10:10:12.329 kid1| TcpAcceptor.cc(265) acceptNext:
> connection on local=192.168.5.183:80 remote=[::] FD 12 flags=9
> 2013/03/14 10:10:12.329 kid1| client_side.cc(2298) parseHttpRequest:
> HTTP Client local=192.168.5.183:80 remote=172.18.12.20:59205 FD 11
> flags=1
> 2013/03/14 10:10:12.329 kid1| client_side.cc(2299) parseHttpRequest: HTTP Client REQUEST:
> ---------
> GET /Content/js/SocialShare.js?__v=1363031409 HTTP/1.0^M
> Host: testsite.domain.com^M
> Cookie: Domain.SqlXml.LastUpdate=0^M
> Accept: */*^M
> Accept-Encoding: *^M
> User-Agent: JoeDog/1.00 [en] (X11; I; Siege 2.72)^M
> Connection: close^M
> ^M
>
> ----------
> 2013/03/14 10:10:12.330 kid1| client_side_request.cc(760) clientAccessCheckDone: The request GET https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw%3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNEFOaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f729c856f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470 is 1, because it matched 'all'
> 2013/03/14 10:10:12.330 kid1| client_side_request.cc(734)
> clientAccessCheck2: No adapted_http_access configuration. default:
> ALLOW
> 2013/03/14 10:10:12.330 kid1| client_side_request.cc(760) clientAccessCheckDone: The request GET https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw%3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNEFOaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f729c856f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470 is 1, because it matched 'all'
> 2013/03/14 10:10:12.330 kid1| forward.cc(103) FwdState: Forwarding
> client request local=192.168.5.183:80 remote=172.18.12.20:59205 FD 11
> flags=1,
> url=https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.
> com/Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2Vjzo
> hVw%3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJ
> bNEFOaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f7
> 29c856f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470
> 2013/03/14 10:10:12.330 kid1| peer_select.cc(271) peerSelectDnsPaths:
> Find IP destination for:
> https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/
> Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw%
> 3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNEF
> OaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f729c8
> 56f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470' via
> origin.portal.domain.com
> 2013/03/14 10:10:12.330 kid1| peer_select.cc(271) peerSelectDnsPaths:
> Find IP destination for:
> https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/
> Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw%
> 3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNEF
> OaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f729c8
> 56f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470' via
> origin.portal.domain.com
> 2013/03/14 10:10:12.330 kid1| peer_select.cc(298) peerSelectDnsPaths: Found sources for 'https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw%3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNEFOaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f729c856f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470'
> 2013/03/14 10:10:12.330 kid1| peer_select.cc(299) peerSelectDnsPaths: always_direct = 0
> 2013/03/14 10:10:12.330 kid1| peer_select.cc(300) peerSelectDnsPaths: never_direct = 0
> 2013/03/14 10:10:12.330 kid1| peer_select.cc(309) peerSelectDnsPaths: cache_peer = local=0.0.0.0 remote=192.168.5.20:80 flags=1
> 2013/03/14 10:10:12.330 kid1| peer_select.cc(309) peerSelectDnsPaths: cache_peer = local=0.0.0.0 remote=192.168.5.20:80 flags=1
> 2013/03/14 10:10:12.330 kid1| peer_select.cc(311) peerSelectDnsPaths: timedout = 0
> 2013/03/14 10:10:12.330 kid1| http.cc(2177) sendRequest: HTTP Server
> local=192.168.5.183:51057 remote=192.168.5.20:80 FD 32 flags=1
> 2013/03/14 10:10:12.330 kid1| http.cc(2178) sendRequest: HTTP Server REQUEST:
> ---------
> GET /Content/js/SocialShare.js?__v=1363031409 HTTP/1.1^M
> Host: testsite.domain.com^M
> Cookie: Domain.SqlXml.LastUpdate=0^M
> Accept: */*^M
> Accept-Encoding: *^M
> User-Agent: JoeDog/1.00 [en] (X11; I; Siege 2.72)^M
> Surrogate-Capability: cache1.domain.com="Surrogate/1.0 ESI/1.0"^M
> X-Forwarded-For: 172.18.12.20^M
> Cache-Control: max-age=259200^M

Um. 259200 seconds == 4320 minutes. Which is the refresh_pattern maximum age value.

Asside:
I think there is a minor bug here in that the max-age added by Squid should really either be absent (nothing cached), or 604800 (from last server response max-age value).
It is not relevant to your problem though, at worst this would make a parent cache MISS.

> Connection: keep-alive^M
> ^M
>
> ----------
> 2013/03/14 10:10:12.358 kid1| ctx: enter level 0: 'https://urldefense.proofpoint.com/v1/url?u=http://testsite.domain.com/Content/js/SocialShare.js?__v%3D1363031409&k=LXAl%2FS1Qy5NX2y2VjzohVw%3D%3D%0A&r=zo9XkoYHQcWwwCdFUN9MRsoh05AAVkIG0wIFJyHOKjQ%3D%0A&m=YCJbNEFOaqXclG6S%2BFiBYdZmc%2BMoTwOPouA5u65NkSg%3D%0A&s=b327520db872ca1f729c856f2c23bc7cf08cea4ffa3c5deeb3ca18046cb78470'
> 2013/03/14 10:10:12.358 kid1| http.cc(732) processReplyHeader: HTTP
> Server local=192.168.5.183:51057 remote=192.168.5.20:80 FD 32 flags=1
> 2013/03/14 10:10:12.358 kid1| http.cc(733) processReplyHeader: HTTP Server REPLY:
> ---------
> HTTP/1.1 200 OK^M
> Cache-Control: max-age=604800^M

Again the "don't store more than 7 days from last modification" instruction.

> Content-Type: application/x-javascript^M
> Content-Encoding: gzip^M
> Last-Modified: Fri, 28 Dec 2012 15:00:37 GMT^M

modification + 7 days ==> Expires: 5 Jan 2013 ...

Amos
Received on Fri Mar 15 2013 - 16:42:09 MDT

This archive was generated by hypermail 2.2.0 : Sat Mar 16 2013 - 12:00:05 MDT