The code is open source (MIT licence) and available on GitHub. I’ve not linked to as its currently undergoing a refactoring / documenting process ready for release of v0.1.
If you’re curious (like I was), I think that’s the code: https://github.com/heidi-ann/ocaml-raft
If you’re curious (like I was), I think that’s the code: https://github.com/heidi-ann/ocaml-raft