gistfile1.nginxconf

http {
  limit_req_zone $binary_remote_addr zone=STATIC_LIMIT_REQ:1m rate=50r/s;
  limit_req_zone $binary_remote_addr zone=DYNAMIC_LIMIT_REQ:1m rate=5r/s;

  # set up "global" limit_req for all requests, including static files:
  limit_req zone=STATIC_LIMIT_REQ burst=100 nodelay;

  server {
    server_name mydomain.com;
 
    location /admin {
      # This works fine!
      limit_req zone=DYNAMIC_LIMIT_REQ burst=5 nodelay;  

      # ...
      proxy_pass http://admin;
    }

    location / {
      # try for page-cached files, so don't want to rate limit here:
      try_files /maintenance.html $cache_path @dynamic;
    }

    location @dynamic {
      # Here all requests will be passed to our backend servers, so we want to limit but...
      # This limit_req is ignored!
      limit_req zone=DYNAMIC_LIMIT_REQ burst=5 nodelay;  

      # ...
      proxy_pass http://backend;
    }
}