I benchmarked ClickHouse vs. Timescale, Citus, Greenplum and Elasticsearch for a real-time analytics application. With a couple hours learning for each (although I’ve used Postgres extensively and so Postgres-backed databases had a bit of an advantage), ClickHouse’s performance was easily an order of magnitude or two better than anything except ES. ES had its own downsides with respect to the queries we could run (which is why we were leaving ES in the first place).