proxy_cache seems not working with X-Accel-Redirect

[Maxim Dounin]

Hello!

On Fri, Aug 09, 2013 at 06:20:21AM -0400, gray wrote:

> My config
> 
> location ~ /cached/ {
>         proxy_pass  http://apache;
>         proxy_cache cache;
>         proxy_cache_valid 2h;
>         proxy_cache_key "$host|$request_uri";                               
>  
> }
> 
> location /htdocs_internal/ {
>             internal;                                                       
>                                                                     
>             alias $htdocs_path;
> }
> 
> Requests with header in reply X-Accel-Redirect not cached, every time
> request is sent to apache. When i add these directives
> proxy_pass_header X-Accel-Redirect;
> proxy_ignore_headers X-Accel-Redirect;
> cache works fine (but is useless :) ), so it isn't problem with "no cache"
> headers from apache.

Yes, proxy_cache can't cache responses with X-Accel-Redirect.

As a workaround, you may use an additional proxy layer with 
proxy_cache and proxy_ignore_headers X-Accel-Redirect + 
proxy_pass_headers X-Accel-Redirect.

-- 
Maxim Dounin
http://nginx.org/en/donation.html