ClickHouse

ClickHouse is an open-source column-oriented database management system that allows generating analytical data reports in real time.

Useful Links

Official website has quick high-level overview of ClickHouse on main page.
Tutorial shows how to set up and query small ClickHouse cluster.
Documentation provides more in-depth information.
Blog contains various ClickHouse-related articles, as well as announces and reports about events.
Contacts can help to get your questions answered if there are any.