I don't want to be too disparaging, so I will just say that the language is exotic. Otherwise, the licensing model is Oracle-esque based on host and core counts etc. The software is fast, that you cannot deny, though it does critically depend on the speed of the storage attached to the host. Also, it's written in C++ and it shows. Had to do multiple (paid) upgrades due to memory leaks.

I'm sure there was a time it was best in class and even now maybe it's the best for a few niche use cases, but unless you're absolutely certain you need it, I would flee from it and save your sanity.