In this blog, I’ll look at how to use ClickHouse for parallel log processing. Below I’ll show how ClickHouse can be used to efficiently perform this task. ClickHouse is attractive because it has multi-core parallel query processingRead More
It took a while for Yandex to respond to numerous community requests regarding release notes. But finally it's there. On August 21-st Yandex created a changelog file covering releases starting from 1.1.54245, and they keep it up to date so far.Read More
In this blog post, we’ll look at nested data structures in ClickHouse for MySQL and how this can be used with PMM to look at queries.Read More
Altinity announced that it will provide a cloud version of ClickHouse on Kodiak Data MemCloudTM, the edge-cloud for Big Data.Read More
In this article we discover several companies that are using ClickHouse in production for different use cases.Read More
We continue benchmarking ClickHouse. In this article we discuss a benchmark against Amazon RedShift.Read More
ClickHouse data distribution and replication are fundamental techniques for building reliable and scalable ClickHouse systems. In this article we will explain how it works from the user perspectiveRead More
ClickHouse is an exellent DBMS with very smart people working on it. Unfortunately, it still lacks some important communication procedures, and arguable the most wanted one is release notes.
Altinity mission is to make ClickHouse use easy for everbody, and we will try to fill the gap between Yandex and end users.
Below are release notes that Yandex team presented at the recent meetup in Ekaterinburg. It includes changes and new features appeared in latest 1.1.54231 release as well as some others that were not yet documented or publically explained.
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.Read More
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.Read More