One of my clients came DDoS attacks every summer three years in a row, we said we were going to print up T-shirts for the annual event but they stopped this yea

One of my clients came DDoS attacks every summer three years in a row, we said we were going to print up T-shirts for the annual event but they stopped this year. We setup copies of the site so we could quickly rotate it to new IPs during the attack and signed up for the CloudFlare business plan for a month or two during the attacks every year. This kept the site up for us. We also posted a message on the home page so our users would know what was going on. We were able to use under attack mode without it affecting the site too much. Good luck riding it out.