I am being DDoS'd. What should I do?

Obviously, your project is a success, and it bothers somebody a lot.

We feel sorry for you, but we cannot protect you. We recommend consulting cybersecurity experts. The reason is that it is inefficient to defend against DDoS via the server's resources. Moreover, in case of a massive DDoS attack, we block the server to protect the DC equipment.

Check out these cybersecurity options: https://www.cloudflare.com/.