server {
  listen 80;
  server_name api.example.com;

  client_max_body_size 20m;

  location / {
    proxy_pass http://127.0.0.1:3000;
    proxy_http_version 1.1;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;

    # SSE support
    proxy_buffering off;
    proxy_cache off;
    proxy_read_timeout 3600;
    proxy_send_timeout 3600;
    chunked_transfer_encoding off;
  }
}