[squid-users] Getting the full file content on a range request, but not on EVERY get ...

Heiler Bemerguy heiler.bemerguy at cinbesa.com.br
Thu May 12 19:17:30 UTC 2016


I also don't care too much about duplicated cached files.. but trying to 
cache "ranged" requests is topping my link and in the end it seems it's 
not caching anything lol

EVEN if I only allow range_offset to some urls or file extensions....


Best Regards,


-- 
Heiler Bemerguy - (91) 98151-4894
Assessor Técnico - CINBESA (91) 3184-1751


Em 12/05/2016 16:09, Yuri Voinov escreveu:
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> I suggest it is very bad idea to transform caching proxy to linux
> distro's or something else archive.
>
> As Amos said, "Squid is a cache, not an archive".
>
>
> 13.05.16 0:57, Hans-Peter Jansen пишет:
>> Hi Heiler,
>>
>> On Donnerstag, 12. Mai 2016 13:28:00 Heiler Bemerguy wrote:
>>> Hi Pete, thanks for replying... let me see if I got it right..
>>>
>>> Will I need to specify every url/domain I want it to act on ? I want
>>> squid to do it for every range-request downloads that should/would be
>>> cached (based on other rules, pattern_refreshs etc)
>> Yup, that's right. At least, that's the common approach to deal with CDNs.
>> I think, that disallowing range requests is too drastic to work fine
> on the
>> long run, but let us know, if you get to satisfactory solution this way.
>>
>>> It doesn't need to delay any downloads as long as it isn't a dupe of
>>> what's already being downloaded.....
>> You can set to delay to zero of course.
>>
>> This is only one side of the issues with CDNs. The other, more
> problematic
>> side of it is, that many server with different URLs provide the same
> files.
>> Every new address will result in a new download of otherwise identical
>> content.
>>
>> Here's an example of openSUSE:
>>
>> #
>> # this file was generated by gen_openSUSE_dedups
>> # from http://mirrors.opensuse.org/list/all.html
>> # with timestamp Thu, 12 May 2016 05:30:18 +0200
>> #
>> [openSUSE]
>> match:
>>      # openSUSE Headquarter
>>      http\:\/\/[a-z0-9]+\.opensuse\.org\/(.*)
>>      # South Africa (za)
>>      http\:\/\/ftp\.up\.ac\.za\/mirrors\/opensuse\/opensuse\/(.*)
>>      # Bangladesh (bd)
>>      http\:\/\/mirror\.dhakacom\.com\/opensuse\/(.*)
>>      http\:\/\/mirrors\.ispros\.com\.bd\/opensuse\/(.*)
>>      # China (cn)
>>      http\:\/\/mirror\.bjtu\.edu\.cn\/opensuse\/(.*)
>>      http\:\/\/fundawang\.lcuc\.org\.cn\/opensuse\/(.*)
>>      http\:\/\/mirrors\.tuna\.tsinghua\.edu\.cn\/opensuse\/(.*)
>>      http\:\/\/mirrors\.skyshe\.cn\/opensuse\/(.*)
>>      http\:\/\/mirrors\.hust\.edu\.cn\/opensuse\/(.*)
>>      http\:\/\/c\.mirrors\.lanunion\.org\/opensuse\/(.*)
>>      http\:\/\/mirrors\.hustunique\.com\/opensuse\/(.*)
>>      http\:\/\/mirrors\.sohu\.com\/opensuse\/(.*)
>>      http\:\/\/mirrors\.ustc\.edu\.cn\/opensuse\/(.*)
>>      # Hong Kong (hk)
>>      http\:\/\/mirror\.rackspace\.hk\/openSUSE\/(.*)
>>      # Indonesia (id)
>>      http\:\/\/mirror\.linux\.or\.id\/linux\/opensuse\/(.*)
>>      http\:\/\/buaya\.klas\.or\.id\/opensuse\/(.*)
>>      http\:\/\/kartolo\.sby\.datautama\.net\.id\/openSUSE\/(.*)
>>      http\:\/\/opensuse\.idrepo\.or\.id\/opensuse\/(.*)
>>      http\:\/\/mirror\.unej\.ac\.id\/opensuse\/(.*)
>>      http\:\/\/download\.opensuse\.or\.id\/(.*)
>>      http\:\/\/repo\.ugm\.ac\.id\/opensuse\/(.*)
>>      http\:\/\/dl2\.foss\-id\.web\.id\/opensuse\/(.*)
>>      # Israel (il)
>>      http\:\/\/mirror\.isoc\.org\.il\/pub\/opensuse\/(.*)
>>     
>>      [...] -> this list contains about 180 entries
>>
>> replace: http://download.opensuse.org.%(intdomain)s/\1
>> # fetch all redirected objects explicitly
>> fetch: true
>>
>>
>> This is, how CDNs work, but it's a nightmare for caching proxies.
>> In such scenarios squid_dedup comes to rescue.
>>
>> Cheers,
>> Pete
>> _______________________________________________
>> squid-users mailing list
>> squid-users at lists.squid-cache.org
>> http://lists.squid-cache.org/listinfo/squid-users
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