RethinkDB

For the past 40 years, database design has largely remained the same. But in that time, hardware and software technology has changed drastically, completely changing the way we store data, access data, and interact with data. RethinkDB keeps the familiar parts of database design -- the relational model -- and does away with legacy design decisions that no longer make sense in today's world.

Now that solid-state drives have finally become cost-effective and popular, we can take advantage of their unique properties to build databases the way we've always wanted to build them. We can deliver amazing performance, lock-free concurrency, instantaneous failure recovery, hot backup, and live schema updates.

There are a lot of innovative databases out there, but most of them require significant changes to the way you build your software. With RethinkDB, you simply drop it in as a MySQL storage engine, and you'll instantly be able to experience all of these features without making any changes to your infrastructure.