Cache problem - not expiring

Server NGINX
1

nginx 0.8.49

Hello List,

have a problem with cached images which dont want to expire from cache.
i use nginx as proxy with 2 ApacheBackends. On backend an image was
updated
by ftp but nginx still serves cached image for hours. i had to delete it
manually…
in nginx.conf i use:

proxy_cache_min_uses 1;
proxy_cache_valid 200 5m;
proxy_cache_path /usr/local/nginx/proxy_temp/ levels=1:2
keys_zone=ramdisk:1000m inactive=10m max_size=2000M;

I need some help, in which direction i should look for problems?

Thanks,
Hajo

2

Hello!

On Fri, Mar 11, 2011 at 09:58:27AM +0100, Hajo Locke wrote:

proxy_cache_min_uses 1;
proxy_cache_valid 200 5m;
proxy_cache_path /usr/local/nginx/proxy_temp/ levels=1:2
keys_zone=ramdisk:1000m inactive=10m max_size=2000M;

I need some help, in which direction i should look for problems?

Check headers (Expires, Cache-Control) returned by backends. They
take precedence over proxy_cache_valid specified (unless ignored
with proxy_cache_ignore_headers).

Maxim D.