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
in nginx.conf i use:
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?