The fact that it's fast, scalable (and has been for years), highly available & fault tolerant is great! I've worked with other NoSQL stores but none of them have all those features at once like this one does - so far :). Nothing to dislike really about anything in particular yet :) Would be nice if they had more documentation as well regarding best practices/tips when setting up etc., not just "do these steps". But otherwise there isn't much else i can complain or say needs improvement uponโฆ
Pros
Scalability means lotsa storage capacity without having too many machines dedicated solely towards DB maintenance.