Reverse Proxy with caching

[Johan Bergström]

Hey,

On 15 okt 2009, at 16.22, Igor Sysoev wrote:

> On Thu, Oct 15, 2009 at 03:17:20PM +0200, Smrchy wrote:
>
>> Hi,
>>
>> i setup nginx and it's working great for us for static files. I'm  
>> wondering
>> if nginx would be suited for the following scenario:
>>
>> We have an application server that has a lot of .php files and even  
>> more
>> static files (.gif, .jpg etc).
>>
>> Can i put nginx in front of if like a proxy but have nginx cache  
>> the static
>> files (everything except the .php stuff). So that only .php  
>> requests reach
>> the server and the static files will be cached on the nginx machine  
>> once the
>> get retrieved from the upstream server.
>
> First, you may separate static files from PHP:
>
> server {
>
>    location ~ \.(gif|jpg|png)$ {
>        root                 /data/www;
>    }
>
>    location ~ \.php$ {
>        proxy_pass           http://backend;
>    }
>
> However, you have to retrieve the files by yourself.
>
> Second, you may use mirror on demand:
>
> server {
>
>    location ~ \.(gif|jpg|png)$ {
>        root                 /data/www;
>        error_page           404 = @fetch;
>    }
>
>    location @fetch {
>        internal;
>
>        proxy_pass           http://backend;
>        proxy_store          on;
>        proxy_store_access   user:rw  group:rw  all:r;
>        proxy_temp_path      /data/temp;
>
>        root                 /data/www;
>    }
>
>    location ~ \.php$ {
>        proxy_pass           http://backend;
>    }
>
> And finally, you may use proxy cache:

You could also add the cache purge patch to your stack if you need to  
invalidate cached content: http://labs.frickle.com/nginx_cache_purge/  
(applies to 0.8.x)

>
> proxy_cache_path  /data/nginx/cache  levels=1:2    keys_zone=STATIC: 
> 10m
>                                     inactive=24h  max_size=1g;
> server {
>
>    location ~ \.(gif|jpg|png)$ {
>        proxy_pass           http://backend;
>        proyx_cache          STATIC;
>        proyx_cache_valid    200  1d;
>        proxy_cache_use_stale  error timeout invalid_header updating
>                               http_500 http_502 http_503 http_504;
>    }
>
>    location ~ \.php$ {
>        proxy_pass           http://backend;
>    }
>
>
> -- 
> Igor Sysoev
> http://sysoev.ru/en/
>