Altinity ClickHouse Repository
We are pleased to announce that Altinity repository hosting ClickHouse RHEL/CentOS RPMs as well as packages for Fedora is available at packagecloud
ClickHouse Dictionaries Benchmarking
Apr 26, 2017
There are few ClickHouse benchmarks in the web already. Most of them use denormalized database schema. However, in denormalization is not always possible or desirable. In this article we will compare the query performance between denormalized and normalized schema where normalization is modelled using unique ClickHouse external dictionaries feature.
ClickHouse Dictionaries Explained
Apr 12, 2017
One of the most useful ClickHouse features is external dictionaries. They are extremely powerful, and if used efficiently may lead to quite elegant designs. I will lead you through the dictionaries using few examples that highlight basic and advanced usage scenarios. So let’s begin.