nginx-0.6.4

[焦胜强]

use proxy_store,
if the file update on backend, then the nginx proxy can not auto update file

2007/7/18, Igor Sysoev <is at rambler-co.ru>:
>
> On Wed, Jul 18, 2007 at 12:03:17AM +0200, Janko Hauser wrote:
>
> >
> > 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.
>
> proxy_set_header  X-Store   yes;
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>


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焦胜强
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