Thoughts on MemSQL?

This company has a strong engineering team and a product that seems incredibly useful (distributed SQL database). They optimize for in memory storage allowing for fast analytical queries, but also support on disk storage. Not sure who their competitors really are, maybe NuoDB and TiDB (but neither of those have the in-memory focus). Listed as a breakout company by Y Combinator. Considering interviewing with them, think they will make it big or be overrun by oracle / others?