It really looks absolutely amazing, I feel guilty because I want to run a service on it, there's almost no downside to running it everywhere you'd normally run Redis.

Also in the cool-redis-stuff category:

https://github.com/twitter/pelikan

Doesn't have the feature set that KeyDB has but both of these pieces of software feel like they could the basis of a cloud redis product that would be really efficient and fast. I've got some plans to do just that.

Are you Google search? How do you have millions of requests per second?

Lots of industries and applications can get to that scale. My last few companies were in adtech where that is common.

Thanks, I had no idea!

It's likely millions of internal requests, which as another comment mentions, is common in a number of industries.