update: perf nginx access log format

nginx/nginx.conf

@@ -10,6 +10,9 @@ events {
 }
 
 http {
+    log_format access '[$time_iso8601] $remote_addr -> $scheme://$host - "$request"'
+                      ' -> ($status) ↑$request_length ↓$bytes_sent {$http_user_agent}';
+    access_log /var/log/nginx/access.log access;
     include /etc/nginx/mime.types;
     include /etc/nginx/kms.conf;
 }