Blazing Fast
ClickHouse's performance exceeds comparable column-oriented DBMS currently available on the market. It processes hundreds of millions to more than a billion rows and tens of gigabytes of data per single server per second.
ClickHouse uses all available hardware to its full potential to process each query as fast as possible. The peak processing performance for a single query (after decompression, only used columns) stands at more than 2 terabytes per second.
Linearly Scalable
ClickHouse allows companies to add servers to their clusters when necessary without investing time or money into any additional DBMS modification. The system has been successfully serving Yandex.Metrica, while the count of servers in it's main production cluster have grown from 60 to 394 in two years, which are by the way located in six geographically distributed datacenters.
ClickHouse scales well both vertically and horizontally. ClickHouse is easily adaptable to perform either on cluster with hundreds of nodes, or on a single server or even on a tiny virtual machine. Currently there are installations with more than two trillion rows per single node, as well as installations with 100Tb of storage per single node.