I run http://DNSDigger.com http://DNSDigger.com as a (big) hobby project but trying to commercialize it. I will add features and API access but as far i actuall

I run http://DNSDigger.com http://DNSDigger.com as a (big) hobby project but trying to commercialize it. I will add features and API access but as far i actually only made like $100USD from it since i started it ~2006. I only recently got a proper server for it but need beefier ones if i gonna expand. My row size is really small but in total i have over a billion rows. Insert speed is crucial as i update/insert new IP data in the millions per day and when the new features is in place i will grow minimum 100 million rows per month. I currently have all tables as MyISAM because insert speed is important and the DB would not fit on the 240GB SSD if i changed to InnoDB. So without any money now i have to use whatever tool i can.