DNSimple engineers optimized dns_erlang, their open-source DNS library powering erldns authoritative nameservers, by rewriting hot paths with binary pattern matching to reduce CPU per query by 12%. The optimization targets the critical request-decode and response-encode cycle that every DNS query must pass through at scale.
Background
DNSimple operates a global anycast DNS cache edge and authoritative name servers built on their open-source erldns server written in Erlang. dns_erlang is the core library handling all packet parsing at the origin.
- Source
- Lobsters
- Published
- Oct 19, 2026 at 09:26 PM
- Score
- 6.0 / 10