You should never write an authoritative DNS server, but if you do, Erlang is a pretty good choice of language for implementing one. In this talk I will explain why we selected Erlang to develop our new authoritative DNS server for DNSimple. I will show you features of the language that were beneficial to the development of the system and I will present examples of code demonstrating how those features are used.

I will also cover some of the challenges we faced when developing the application, including how we identified and overcame specific performance bottlenecks.