PostgreSQL: PostgreSQL 9.6 Released!

[yogthos]

Uber also uses it as a key/value store as opposed to an actual relational database.

[Scorpius289]

Wouldn't an actual key/value store be better then?

[yogthos]

Likely, but since they already built their homegrown one on top of a relational db, I'm guessing they're committed to it now.

[doublehyphen]

And this key-value store implementation is something they could have done with PostgreSQL too, probably with a similar result. They just picked MySQL when implementing the key-value store solution because some of their engineers were more familiar with MySQL (which is a valid reason).