The most useful feature that I found was its ability to store data at low latency (i think it's around 5ms). It has also been very stable over time with no major issues reported so far. There are some minor performance improvements as well which can be achieved by tuning certain parameters but nothing too significant yet. As of now there isn't much you need from this product other than storing your application logs/events or any kind of transactional system where high speed reads & writes matter more than consistency guarantees - though they do provide them out of box! You may want something else if what we're talking about here doesn't fit into your use case scenario otherwise go ahead using Voltdb since all our requirements were met quite nicely without us having had problems related to memory usage etc. We've used volTdb mostly because we needed faster storage mechanism compared to traditional RDMBSs like Oracle DBMSes, MySQL Dbs etc., Also when working with large.