Thanks for your info, I need to read a lot, thanks!!!
On Thu, May 24, 2012 at 5:24 AM, Eliezer Croitoru <eliezer_at_ngtech.co.il> wrote:
> i'm not that fan of linking to web pages so you will need to read but
> sometimes it's a must.
> starts with this:
> http://www.mnot.net/cache_docs/
> to understand the basic things about http cache.
>
> this page:
> http://www.squid-cache.org/Doc/config/refresh_pattern/
> is specific on squid refresh patterns usage.
>
> i must say that the above squid document took me awhile to understand and
> until today i dont like the way it's organized (just my opinion) but it
> contains everything about refresh_pattern.
>
> this document:
> http://etutorials.org/Server+Administration/Squid.+The+definitive+guide/Chapter+7.+Disk+Cache+Basics/7.7+refresh_pattern/
>
> was taken from squid book and is organized nicely.
>
> i will give you one site that is organized as heaven for http cache:
> http://www.djmaza.com/
>
> about the frontera.info you will want to check the main page instead of the
> one you checked using:
> http://redbot.org/?descend=True&uri=http://www.frontera.info/Home.aspx
>
> the server time is not correct but as for cache age it's not important.
>
> Regards,
>
> Eliezer
> (you can look me up on squid irc channel)
>
>
>
> On 24/05/2012 03:59, Beto Moreno wrote:
>>
>> Hi, thanks for your info.
>>
>> I had try that tool, just need to understand:
>>
>> frontera.info say:
>>
>> General
>> The server's clock is 3 min 58 sec behind.
>> Content Negotiation
>> The resource doesn't send Vary consistently.
>> The server's clock is 3 min 58 sec behind.
>> Content negotiation for gzip compression is supported, saving 42%.
>> The server's clock is 3 min 58 sec behind.
>> Caching
>> This response only allows a private cache to store it.
>> This response allows a cache to assign its own freshness lifetime.
>>
>> Now the embedded:
>>
>> Problems
>> The server's clock is 3 min 58 sec behind.
>> This response allows a cache to assign its own freshness lifetime.
>> The resource doesn't send Vary consistently.
>> The Content-Disposition header doesn't have a 'filename' parameter.
>> Cache-Control: public is rarely necessary.
>> The If-Modified-Since response is missing required headers.
>>
>> Now yahoo.com
>>
>> General
>> The server's clock is correct.
>> Caching
>>
>> This response only allows a private cache to store it.
>> This response allows a cache to assign its own freshness lifetime.
>>
>> Now: noticiasmvs.com
>>
>> General
>> The server's clock is correct.
>> The Content-Length header is correct.
>>
>> Content Negotiation
>> Content negotiation for gzip compression is supported, saving 22%.
>>
>> Caching
>> This response allows all caches to store it.
>> This response allows a cache to assign its own freshness lifetime.
>>
>> What I understand is that yahoo/frontera won't let squid to save some
>> of their data, and noticiasmvs is open for squid, right?
>>
>> Will very appreciated if someone could explain me a little more about
>> this output from this site I want to go deeper with squid, what we can
>> do in this situation(private cache)?
>>
>> Thanks!!!
>>
>> On Wed, May 23, 2012 at 2:57 AM, Eliezer Croitoru<eliezer_at_ngtech.co.il>
>> wrote:
>>>
>>> you can try to use this tool:
>>> http://redbot.org/
>>> to make sure what are the sites cachebilaty options
>>> maybe some objects there need some cache enforcement rules in the
>>> refresh_pattern specified for them.
>>>
>>> Eliezer
>>>
>>>
>>> On 23/05/2012 02:54, Beto Moreno wrote:
>>>>
>>>>
>>>> I had been working on the settings:
>>>>
>>>> refresh_pattern.
>>>>
>>>> The doc say that is better for the new websites that use dynamic
>>>> content and a friend here at the list explain me the difference.
>>>>
>>>> My test was simple:
>>>>
>>>> use 2 browsers: firefox/iexplore.
>>>> Run the test twice for each site.
>>>>
>>>> first run
>>>> firefox site1, site2,site3,site4
>>>> iexplore site1, site2,site3,site4
>>>>
>>>> run ccleaner, repeat the test.
>>>>
>>>> run srg to get my squid-cache peformance and free-sa.
>>>>
>>>> They where 3 settings I try and make the same test.
>>>>
>>>> NOTE: every time I start a setting, I delete my cache, clean my logs
>>>> and start from 0.
>>>>
>>>> setting 1 default settings
>>>> acl QUERY urlpath_regex cgi-bin \?
>>>> cache deny QUERY
>>>>
>>>> setting 2 new way:
>>>> disable the old way:
>>>>
>>>> #acl QUERY urlpath_regex cgi-bin \?
>>>> #cache deny QUERY
>>>> refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
>>>> refresh_pattern . 0 20% 4320
>>>>
>>>> setting 2:
>>>>
>>>> refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
>>>> refresh_pattern -i \.(gif|png|jpg|jpeg|ico)$ 10080 90% 43200
>>>> refresh_pattern -i \.index.(html|htm)$ 0 40% 10080
>>>> refresh_pattern -i \.(html|htm|css|js)$ 1440 40% 40320
>>>> refresh_pattern . 0 20% 4320
>>>>
>>>> Them after I finish my test I start reviewing my logs and compare,
>>>> the sites I use was:
>>>>
>>>> yahoo.com
>>>> osnews.com
>>>> frontera,info(local news paper)
>>>> noticias,nvs.com
>>>> centos.org
>>>>
>>>> I didn't interact with the site, just get to the first page, finish
>>>> loading and done, continue with the next one.
>>>>
>>>> Once I check my reports I didn't see to much difference, I found just
>>>> 1 log that the old way didn't "cache" 1 thing, check:
>>>>
>>>> setting 1/2 have this:
>>>>
>>>> 1337667655.898 0 192.168.50.100 TCP_MEM_HIT/200 21280 GET
>>>> http://www.frontera.info/WebResource.axd? - NONE/-
>>>> application/x-javascript
>>>>
>>>> setting 1 TCP_MISS.
>>>>
>>>> Example of part my logs:
>>>>
>>>> 1337667655.596 43 192.168.50.100 TCP_MISS/302 603 GET
>>>> http://frontera.info/ - DIRECT/216.240.181.163 text/html
>>>> 1337667655.748 54 192.168.50.100 TCP_MISS/200 1454 GET
>>>> http://www.frontera.info/HojasEstilos/Horoscopos.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.749 52 192.168.50.100 TCP_MISS/200 1740 GET
>>>> http://www.frontera.info/Includes/Controles/LosEconomicos.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.749 49 192.168.50.100 TCP_MISS/200 1557 GET
>>>> http://www.frontera.info/Includes/Controles/ReporteroCiudadano.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.754 54 192.168.50.100 TCP_MISS/200 1697 GET
>>>> http://www.frontera.info/Includes/Controles/Elementos.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.780 24 192.168.50.100 TCP_MISS/200 1406 GET
>>>> http://www.frontera.info/Includes/Controles/Finanzas.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.817 124 192.168.50.100 TCP_MISS/200 21639 GET
>>>> http://www.frontera.info/HojasEstilos/Estilos2009.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.898 0 192.168.50.100 TCP_MEM_HIT/200 21280 GET
>>>> http://www.frontera.info/WebResource.axd? - NONE/-
>>>> application/x-javascript
>>>> 1337667655.903 20 192.168.50.100 TCP_MISS/200 1356 GET
>>>> http://www.frontera.info/Interactivos/lib/jquery.jcarousel.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.907 308 192.168.50.100 TCP_MISS/200 116552 GET
>>>> http://www.frontera.info/Home.aspx - DIRECT/216.240.181.163 text/html
>>>> 1337667655.935 23 192.168.50.100 TCP_MISS/200 3934 GET
>>>> http://www.frontera.info/Interactivos/skins/fotos/skin.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.966 27 192.168.50.100 TCP_MISS/200 3995 GET
>>>> http://www.frontera.info/Interactivos/skins/elementos/skin.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.971 23 192.168.50.100 TCP_MISS/200 4260 GET
>>>> http://www.frontera.info/HojasEstilos/ui.tabs.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.972 24 192.168.50.100 TCP_MISS/200 4953 GET
>>>> http://www.frontera.info/HojasEstilos/thickbox.css -
>>>> DIRECT/216.240.181.163 text/css
>>>> 1337667655.993 21 192.168.50.100 TCP_MISS/200 4380 GET
>>>> http://www.frontera.info/js/finanzas.js - DIRECT/216.240.181.163
>>>> application/x-javascript
>>>> 1337667655.997 47 192.168.50.100 TCP_MISS/200 9341 GET
>>>> http://www.frontera.info/Interactivos/lib/jquery.jcarousel.pack.js -
>>>> DIRECT/216.240.181.163 application/x-javascript
>>>> 1337667656.023 25 192.168.50.100 TCP_MISS/200 4239 GET
>>>> http://www.frontera.info/videos/external_script.js -
>>>> DIRECT/216.240.181.163 application/x-javascript
>>>>
>>>> 3 settings same TCP_MISS.
>>>>
>>>> I was thinking that maybe I will get more TCP_HIT, MEM_HIT, but no.
>>>> noticiasmvs.com a lot HIT's but with the 3 settings.
>>>>
>>>> do this site disable caching their site? exist a way to find out?
>>>> what could cause to still get a lot of MISS?
>>>> where my settings wrong?
>>>> my test was not the best way?
>>>> how can I see if this new settings make a difference?
>>>>
>>>> Any input will be appreciated, thanks for your time!!!
>>>>
>>>> I'm using squid 2.7.x
>>>
>>>
>>>
>>>
>>> --
>>> Eliezer Croitoru
>>> https://www1.ngtech.co.il
>>> IT consulting for Nonprofit organizations
>>> eliezer<at> ngtech.co.il
>>>
>
>
> --
> Eliezer Croitoru
> https://www1.ngtech.co.il
> IT consulting for Nonprofit organizations
> eliezer <at> ngtech.co.il
Received on Fri May 25 2012 - 03:08:36 MDT
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