nginx + caching of static files

[pf shineyear]

www.ncache.org
an nginx cache module

maybe this can help u .

On Tue, Apr 7, 2009 at 5:03 PM, Payam Chychi <pchychi at gmail.com> wrote:

> 2009/4/7 Igor Sysoev <is at rambler-co.ru>:
> > On Tue, Apr 07, 2009 at 12:55:37AM -0700, Payam Chychi wrote:
> >
> >> On Mon, Apr 6, 2009 at 11:03 PM, Payam Chychi <pchychi at gmail.com>
> wrote:
> >> > thank you sir =) you are a king!
> >> >
> >> > -Payam
> >> >
> >> > 2009/4/6 Igor Sysoev <is at rambler-co.ru>:
> >> >> On Mon, Apr 06, 2009 at 10:46:24PM -0700, Payam Chychi wrote:
> >> >>
> >> >>> 2009/4/6 Igor Sysoev <is at rambler-co.ru>:
> >> >>> > On Mon, Apr 06, 2009 at 10:14:36PM -0700, Payam Chychi wrote:
> >> >>> >
> >> >>> >> Hi Guys,
> >> >>> >>
> >> >>> >> I was hoping someone could point out a document where it can
> teach me
> >> >>> >> how to setup nginx + caching. I know that traditionally nginx did
> not
> >> >>> >> have a native caching and it required you to run ncache or
> cachemem in
> >> >>> >> order to perform caching of static content... but does nginx now
> allow
> >> >>> >> basic static file caching without the use of any other 3rd app?
> >> >>> >>
> >> >>> >> Im trying to understand if nginx now has a native caching which
> would
> >> >>> >> allow caching of static content. I dont want to get fancy in
> anyway, I
> >> >>> >> simply want to allocate say 200mb of storage space to allow
> caching of
> >> >>> >> static content. the 200mb should be updated with the most
> >> >>> >> active/recently seen file request.
> >> >>> >>
> >> >>> >> reason? im trying to allow nginx to serve the static files from
> disk
> >> >>> >> (if it has seen it previously) and not have to go back to the
> origin
> >> >>> >> server every single time.
> >> >>> >
> >> >>> > Get the lastest nginx (0.7.50) and use
> >> >>> >
> >> >>> >    proxy_cache_path  /path/to/cache  levels=1:2
> >> >>> >                      keys_zone=one:10m
> >> >>> >                      inactive=7d  max_size=200m;
> >> >>> >
> >> >>> >    proxy_temp_path   /path/to/temp;  # must be on the same
> filesystem
> >> >>> >                                      # as cache
> >> >>> >
> >> >>> >    server {
> >> >>> >
> >> >>> >        location / {
> >> >>> >            proxy_pass              http://backend;
> >> >>> >
> >> >>> >            proxy_cache             one;
> >> >>> >            proxy_cache_key         backend$request_uri;
> >> >>> >            proxy_cache_valid       200  1h;
> >> >>> >            proxy_cache_use_stale   error timeout invalid_header;
> >> >>> >        }
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>> > --
> >> >>> > Igor Sysoev
> >> >>> > http://sysoev.ru/en/
> >> >>> >
> >> >>> >
> >> >>>  proxy_cache_path  /path/to/cache  levels=1:2
> >> >>>                      keys_zone=one:10m
> >> >>>                      inactive=7d  max_size=200m;
> >> >>>
> >> >>>    proxy_temp_path   /path/to/temp;  # must be on the same
> filesystem
> >> >>>                                      # as cache
> >> >>>
> >> >>>    server {
> >> >>>
> >> >>>        location / {
> >> >>>            proxy_pass              http://backend;
> >> >>>
> >> >>>            proxy_cache             one;
> >> >>>            proxy_cache_key         backend$request_uri;
> >> >>>            proxy_cache_valid       200  1h;
> >> >>>            proxy_cache_use_stale   error timeout invalid_header;
> >> >>>        }
> >> >>>
> >> >>>
> >> >>>
> >> >>> few questions:
> >> >>> 1- what does the keys_zone used for
> >> >>> 2- what does the "200 1h" in proxy_cache_valid mean
> >> >>> 3- how is the "proxy_cache_use_stale  error timeout invalid_header"
> used?
> >> >>
> >> >> http://wiki.nginx.org/NginxHttpProxyModule#proxy_cache
> >> >>
> >> >>
> >> >> --
> >> >> Igor Sysoev
> >> >> http://sysoev.ru/en/
> >> >>
> >> >>
> >> >
> >> >
> >> >
> >> > --
> >> > Payam Tarverdyan Chychi
> >> > Network Security Specialist / Network Engineer
> >> >
> >>
> >>
> >> Igor,
> >>
> >> using the caching info  ... i get a "redirect loop" when trying to
> >> download  domain.com/images/spacer.gif  when the file does not exist
> >> on the origin server ... ive also been able replicate this with YSlow
> >> for firefox
> >>
> >> When bypassing the proxy/cache and connecting directly to the origin,
> >> i get the proper 404 error
> >> any ideas?
> >
> > Probably you have something like
> >
> >       error_page  404  /404.html;
> >       proxy_intercept_errors  on;
> >       recursive_error_pages   on;
> >
> > without
> >
> >       location = /404.html {
> >
> > so the /404.html is proxied to backend again.
> >
> > Also you may cache 404 errors too:
> >
> >       proxy_cache_valid    200 1h;
> >       proxy_cache_valid    404 5m;
> >
> >
> > --
> > Igor Sysoev
> > http://sysoev.ru/en/
> >
> >
>
> Right on... that was the problem. fixed with adding exactly what you
> said... im now also caching 404
>
> thanks again
> -payam
>
>
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