Author of Ory Hydra here! Very cool to see this blog post and technical description! I never would have thought this piece of software would secure the internet companies in the world :) Also great to see that the 2.x version performs so well for you! The CPU use is ridiculously small for that scale! We have a commercial variant that‘s even faster, if you ever run into trouble.

If anyone here is interested in providing their own oauth, IAM, rebac permissions, API keys, agent security - check out our open source & commercial products at https://github.com/ory and https://www.ory.com/