Lawrence Hecht:

ClickHouse has come out of seemingly nowhere to rival Elasticsearch as the database-related open source software project with the most active contributors…

ClickHouse is column-oriented and allows for analytics reports to be generated using SQL queries in real-time. ClickHouse’s rise in popularity began in 2016, which happens to be when Apache Spark’s peak.

I first heard of ClickHouse last year when I learned that our friends at Plausible use it for their analytics backend (teamed with Postgres for relational data).