I played with all of them, but spent a lot of my time building products on top of the low-latency OLAP players, particularly Vertica and Greenplum. I dreamt about a database that was lightning fast, scaled extraordinarily well, was Open Source, and was easy to get started with a la Mongo… Back to 2017. I was chatting with the Founder of Sentry one day, we’d been planning a big infrastructure project, and he was incredibly excited about a new database called ClickHouse. So I waited some more… Slowly but surely, a company called Altinity began to distinguish itself in the ClickHouse community. They claim to be excited about it, but I think they mostly figured I’d bother them less if I was an investor in the company :D. I’m thrilled to be backing such a transformational technology and you should really check out ClickHouse and Altinity.Cloud