Disclaimer: while I did not work on those scale tests, I am one of the maintainers of one of the open source projects used in those scale tests.
While the largest fleet I have observed under a single hub managed was fewer than 500 clusters, reviewing those performance results provided good insights.
Thought of sharing here as well since on Linkedin a post by the author on those scale tests went viral (almost 700 likes and 50 plus comments)
Personally I dont care if it is written in Rust or anything else. What I do care is stability, security and features.
I would have enhanced the dashboard a little bit. I understand most of the work was done in the backend. But dashboard is what folks see first. and might lead someone incorrectly judging the work just by looking at that.
Sorry about that. Just out of curiosity, was there any problem/limitation or client just decided a new cluster was needed for any reason (maybe its own ego)?