help about how proxy_cache to store differet cache file by httpheader vary Accept-Encoding like squid

[Ryan Malayter]

You can also make the if block more complicated to remove
accept-encoding for types you know will not be compressed (.gif, .png,
.mpg, etc)

On Fri, Mar 12, 2010 at 7:38 AM, 杨春宇 <yangchunyu at soufun.com> wrote:
> Thanks a lot, This solution is good
>
> Thanks again!
>
>
>
>        yahwist
>
> -----邮件原件-----
> 发件人: Ryan Malayter [mailto:malayter at gmail.com]
> 发送时间: 2010年3月12日 13:10
> 收件人: nginx at nginx.org
> 主题: Re: help about how proxy_cache to store differet cache file by httpheader vary Accept-Encoding like squid
>
> 2010/3/5  <yangchunyu at soufun.com>:
>> I think use proxy_cache_key to define caching key is good idea .
>> but I do not know which variable to use that can distinguish client side
>> support compressed or compressed content and store the different cache file.
>
>
> Here's an example I've used. Of course the upstream server must return
> compressed responses to HTTP/1.0 requests, which many do not by
> default:
> =================
> #normalize all accept-encoding headers to just gzip or the empty string
>        set $myae "";
>        if ($http_accept_encoding ~* gzip) {
>                set $myae "gzip";
>                }
> #the following prevents comressed responses from backend
>        proxy_set_header Accept-Encoding $myae;
>        proxy_pass http://backend;
> #the following uses a combination of URI and the accept-encoding as a
> proxy cache key
>        proxy_cache_key "$host$request_uri$myae";
> --
> RPM
>
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