nginx fastcgi_cache

This is working method how to cache with fastcgi. I used wiki to make it. My nginx.conf looks like this:

fastcgi_cache_path   /var/cache/nginx/friendbg  levels=1:2 keys_zone=friendbg:10m inactive=5m;
fastcgi_cache_path   /var/cache/nginx/friendbgssl  levels=1:2 keys_zone=friendbgssl:10m inactive=5m;
fastcgi_cache_key "$scheme$request_method$host$request_uri";

and my friendbg.conf looks like this:

    fastcgi_cache   friendbgssl;
      fastcgi_cache_valid   200 302  1h;
      fastcgi_cache_valid   301      1d;
      fastcgi_cache_valid   any      1m;
      fastcgi_cache_min_uses  1;
      fastcgi_cache_use_stale error  timeout invalid_header http_500;

I have two keys_zone : friendbg and friendbgssl because 2 vhosts of the website.
Now i have working nginx cache method and says my site loads 0.4 sec faster than without fastcgi cache.