Is there anyone who’s implemented KeyCloak for RBAC?

In my company we're thinking of doing an RBAC and considering a good solution to use.

https://www.keycloak.org/ was thrown about as an option.

I looked at it.. and realized it's a JVM backed system with a pretty hefty footprint. I mean even if you run it via Kubernetes.. it looks like a full-blown solution, with MANY knobs to turn.

Gotta say it scared me a little.. what about the maintenance experience of this huge system? And none of us are Java people.. we are Ruby/Elixir/Python people.

I'm also interested in load testing / latency benchmarks.

Just wanted to ask around if anyone had experience with it?

Thanks in advance!