Definition
A columnar OLAP database for fast analytics over billions of rows.
How it works
Stores data by column + compresses heavily, so aggregations are orders of magnitude faster than a row store.
Common questions
What is ClickHouse?
A columnar OLAP database for fast analytics over billions of rows.
How does ClickHouse work?
Stores data by column + compresses heavily, so aggregations are orders of magnitude faster than a row store.
What is ClickHouse used for in system design?
Stores data by column + compresses heavily, so aggregations are orders of magnitude faster than a row store.
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