I forgot about Aerospike. They basically built a NAND optimized key, value store right? I remember reading about how they used the FTL and thinking they were pretty clever. I cant for the life of me find the article now. I think they were really big in the ad tech space? Is that still the case?
"NAND optimized key value store" doesn't do it justice ;-) The fact that it's SSD optimized has nothing to do with key sharding across trees, the latter is what gets you the absurdly low latency and near infinite scale out. This link gives an overview: https://vldb.org/pvldb/vol9/p1389-srinivasan.pdf And it's open source...
