Based on https://news.ycombinator.com/item?id=10664178 https://news.ycombinator.com/item?id=10664178 it seems that you are running the tracker on your main doma

Based on https://news.ycombinator.com/item?id=10664178 https://news.ycombinator.com/item?id=10664178 it seems that you are running the tracker on your main domain. For a site like this I would put the tracker that's being hit by sites on a different (sub-)domain, to prevent massive traffic spikes on client sites from also taking down your own homepage.