Expires header - with variable value or without break

[Igor Sysoev]

On Mon, Aug 11, 2008 at 08:57:09PM +0200, Rob Dupuis wrote:

> I'm trying to sort out expires headers for my rails app.
> 
> I'm trying two approaches, neither of which seem to work:
> 
> ----------
> Approach 1 - (simple expires in if block):
> 
> location / {
> 
>   if ( $request_uri ~* \.(css|js|gif|jpe?g|png|ico|htc)\?ts_ ) {
>     expires max;
>   }
> 
>   if (-f $request_filename) {
>     break;
>   }
> 
>   proxy_pass http://app_servers;
> }
> 
> This doesn't work at all unless I put a break; within the if block (same
> problem as: http://www.ruby-forum.com/topic/129953)
> 
> ----------
> Approach 2 - (set expires variable into a variable):
> 
> location / {
>   set $expires_value -1;
> 
>   if ( $request_uri ~* \.(css|js|gif|jpe?g|png|ico|htc)\?ts_ ) {
>     set $expires_value max;
>   }
> 
>   if (-f $request_filename) {
>     expires $expires_value;
>     break;
>   }
> 
>   proxy_pass http://app_servers;
>   expires $expires_value;
>   break;
> }
> 
> This gives me an emerg message: "expires" directive invalid value in
> conf_file

The expires directive does not support varaibles.
All these nginx's if's and break's are ugly constructions.

Do you want set max expires for URLs like "/some.gif?ts_anything" ?
Should these URLs proxied to app_servers ?


-- 
Igor Sysoev
http://sysoev.ru/en/