Nginx server configuration with X-Sendfile for Rails

nginx-server-xsendfile

server {
        listen 80;
        listen [::]:80;

        server_name mydomian.com *.mydomian.com;
        root /var/www/default/apps/myproject/current/public;

        passenger_enabled on;
        passenger_set_header X-Sendfile-Type "X-Accel-Redirect";
        passenger_env_var HTTP_X_ACCEL_MAPPING /var/www/default/apps/myproject/shared/public/protects/=/protects/;
        passenger_pass_header X-Accel-Redirect;

        access_log /var/log/nginx/myproject.log;
        error_log  /var/log/nginx/myproject.log;

        location ~ ^/(assets|uploads)/ {
                gzip on;
                gzip_static on;
                expires max;
                add_header Cache-Control public;
                add_header ETag "";
        }

        location ~ /protects/(.*) {
                internal;
                alias /var/www/default/apps/myproject/shared/public/protects/$1;
        }
}