> look like they're trying to roll their own database on top of ... well, a database. That’s exactly what fb is doing. MySQL isn’t used as a k/v store per se b

> look like they're trying to roll their own database on top of ... well, a database. That’s exactly what fb is doing. MySQL isn’t used as a k/v store per se but as the storage layer of the Tao graph database (which is also using memcache. So fb builds a database on top of 2 databases, technically). Source: https://engineering.fb.com/2013/06/25/core-infra/tao-the-power-of-the-graph/ https://engineering.fb.com/2013/06/25/core-infra/tao-the-pow...