You can start nginx on the same host as go-live and use it to proxy connections. Here is an example nginx.conf (located in /etc/nginx/nginx.conf) for example.com on Port 9000. The go-live process runs on Port 9000, and users connect through nginx on Port 80.
Cloudflare can provide caching and DDOS protection for your go-live server. We recommend setting up Cloudflare as the DNS provider and then proxying requests to your go-live server IP address on Port 80.
Cloudflare can also provide HTTPS support for users who connect through it.