proxy_redirect          	off;
proxy_set_header        	Host            $host;
proxy_set_header        	X-Real-IP       $remote_addr;
proxy_set_header        	X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size    	10m;
client_body_buffer_size 	128k;
client_header_buffer_size 	64k;
proxy_connect_timeout   	90;
proxy_send_timeout      	90;
proxy_read_timeout      	90;
proxy_buffer_size   		16k;
proxy_buffers           	32   16k;
proxy_busy_buffers_size 	64k;

# serve cached page if error
proxy_cache_use_stale error;

proxy_cache_path  /var/cache/nginx/blog/data levels=1:2 keys_zone=blog:180m max_size=1000m inactive=600m;
proxy_temp_path   /var/cache/nginx/tmp;

proxy_cache_key "$scheme://$host$request_uri";