Resolve DNS names like it’s 2023. The Knot Resolver is a caching DNS resolver scalable from huge resolver farms down to home network routers.
Knot Resolver is a caching full resolver implementation written in C and LuaJIT, both a resolver library and a daemon. The core architecture is tiny and efficient, and provides a foundation and
a state-machine like API for extensions. There are three modules built-in - iterator, validator, cache, and a few more are loaded by default. Most of the rich features are written in Lua(JIT) and C. Batteries are included, but optional.

Knot Resolver Git