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From Akash Jain <akash.delh...@gmail.com>
Subject Re: [users@httpd] GZIP DEFLATE and HTTPD
Date Fri, 09 Aug 2013 05:05:01 GMT
Thanks a lot Ben. That helped.

On Thu, Aug 8, 2013 at 3:12 AM, Ben Reser <ben@reser.org> wrote:

> On Wed, Aug 7, 2013 at 1:59 PM, Akash Jain <akash.delhite@gmail.com>
> wrote:
> > Per Akamai Guy, Vary shows akamai that content can vary so akamai is not
> > caching, and this leading akamai to make requests to our webversion ...
> > We mostly just use JS and CSS to be served from akamai ..
>
> I think whoever you're talking about at Akamai isn't being very
> helpful.  I know at a minimum you can simply not use compression
> between you and Akamai and then turn on content-acceleration and Akmai
> will do the compression for you.  But I'm pretty sure they can also
> support compression from the origin as well.
>
> Using a random css file from Godady's website:
> http://img2.wsimg.com/pc_css/1/gd_H_20130624_http.min.css
>
> If I do the following with and without the --compressed I see that the
> file is cached:
> $ curl -H 'Pragma: akamai-x-cache-on, akamai-x-get-cache-key,
> akamai-x-get-true-cache-key, akamai-x-serial-no' -v -o /dev/null
> http://img2.wsimg.com/pc_css/1/gd_H_20130624_http.min.css
> (note the X-Cache response with TCP_MEM_HIT).
>
> Using the X-Cache-Key header you can find the origin server which is
> images.secureserver.net in this case...
>
> Hitting it like so:
> $ curl --compressed -v -o /dev/null
> http://img2.wsimg.com/pc_css/1/gd_H_20130624_http.min.css
>
> I see that they are using Content-Encoding: gzip and Vary: Accept-Encoding.
>
> I'm not sure if there's some config they have on their side to avoid
> Akamai request compression or for their origin server to refuse to
> give Akamai gzip.  Unfortunately I don't have an Akamai setup anymore
> to play with.
>
> Thing is Akamai benefits from properly supporting this because their
> bandwidth bill to retrieve data from the origin server goes down.
>
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