nginx-0.6.4

[Janko Hauser]

Am 17.07.2007 um 15:53 schrieb Janko Hauser:

> Am 17.07.2007 um 15:16 schrieb Igor Sysoev:
>
>> On Tue, Jul 17, 2007 at 02:43:17PM +0200, Janko Hauser wrote:
>>
>>> Am 17.07.2007 um 12:44 schrieb Igor Sysoev:
>>>
>>>> proxy_store is not cache, it's rather mirror on demand:
>>>>
>>>> location /images/ {
>>>>    root                 /data/www;
>>>>    error_page           404 = /fetch$uri;
>>>> }
>>>>
>>>> location /fetch {
>>>>    internal;
>>>>
>>>>    proxy_pass           http://backend;
>>>>    proxy_store          on;
>>>>    proxy_store_access   user:rw  group:rw  all:r;
>>>>    proxy_temp_path      /data/temp;
>>>>
>>>>    alias                /data/www;
>>>> }
>>>>
>>>> if file is not found, then it will be fetched from backend and  
>>>> stored
>>>> in 'root/alias' or in path specified explicitly:
>>>>
>>>> proxy_store   /data/www$original_uri;
>>>
>>> Ah, that makes things clearer. Is it possible to steer this from the
>>> backend by setting headers in the response or some other means? But
>>> this alone will help a lot, thanks.
>>
>> proxy_store   /data/www$http_upstream_some_header;
>
> Ah, great, first I thought, this would set only the location, but  
> if the backend sets a "wrong" path, the backend can actually  
> decide, if its content should be stored. The flexibility of nginx  
> is amazing.

Hm, thinking about this some more, the setting of a wrong path would  
nevertheless mean, that something is written everytime the page is  
called. It would be better to have some form of conditional,  
preferable by the existence of a specific header, which can decide if  
proxy_store directive is active, and the return value from the  
backend is stored.

Perhaps this is out of scope of the mechanism.

With regards,

__Janko Hauser

-- 
Janko Hauser  email:  jhauser at zscout.de
               mobile: +49 1721 641552


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