I have the following nginx configuration that I believe -- or at least hope -- serves up my static files, like images ad videos, directly without invoking my dancer app. Can anyone tells me if this is the case or not, or how I can test to see if they are indeed being served directly by NGINX?

server {
    listen 80;
    server_name mydomain.com;
    rewrite ^/(.*) https://mydomain.com/$1 permanent;
        }
 
server {
    listen 443 ssl;
    server_name mydomain.com;
    ssl_certificate /home/starman/mydomain.com.chained.crt;
    ssl_certificate_key /home/starman/mydomain.com.key;
    client_max_body_size 20M;
 
    location / {
 
    # Serve static files directly:
         if (-f $request_filename) {
               expires 30d;
               break;
            }
 
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass http://localhost:5000;
        }
        }