Hi, I came across such configs and I am curios to know what @app_$dc; matches in location configs? try_files $uri @app_$dc; location @app_prod { proxy_pass http://app_prod;} location @app_qadc { proxy_pass http://app_qadc;} Thanks ar Posted at Nginx Forum: http://forum.nginx.org/read.php?2,260841,260841#msg-260841