tdns is a small authoritative nameserver written in Go to be used various experiments and tests. It used to be intended to be really simple to understand and modify as needed. Now the traditional authoritative nameserver part is still almost trivial, but it has sprouted a bunch of additional functionality on the side.
The repo consists of four separate programs:
A simple authoritative DNS nameserver with some special features. See server/README.md
A CLI tool to interact with tdns-server via a REST-ful API. See cli/README.md
A CLI tool that seems like a very simplistic cousin to the much more powerful tool "dig", which is part of the BIND9 distribution from ISC. The primary raison d'etre for "dog" is that it understands the experimental new record types DSYNC and DELEG.
A version of tdns-server that must be configured as a secondary, downstream of whatever is in use as the primary. The point with tdns-agent is to enable a zone to safely use the new synchronisation mechanisms without any requirement to change the existing zone generation and publication setup. See agent/README.md.