It was just* MySQL for a lot longer than you might imagine. They were switching over to Manhattan (in-house DB, similar to FB's Cassandra) when I left, dunno the current state of affairs.
* highly customized and sharded, required team of senior MySQL DBAs to maintain, but still just MySQL.
It was just* MySQL for a lot longer than you might imagine. They were switching over to Manhattan (in-house DB, similar to FB's Cassandra) when I left, dunno the current state of affairs.
* highly customized and sharded, required team of senior MySQL DBAs to maintain, but still just MySQL.
Probably hbase or some derivative of it.