This talk shows how to get a sub-second response from datasets containing a billion rows or more. We’ll start with defining schema and loading quickly data in parallel. We will then introduce tricks like LowCardinality datatype, ASOF joins, and materialized…
May 23, 2019ClickHouse offers incredible flexibility to solve almost any business problem in a multiple of ways. Schema design plays a major role in this. For our recent benchmarking using the Time Series Benchmark Suite (TSBS) we replicated TimescaleDB schema…
May 21, 2019One of our customers recently had a problem using CickHouse: the simple workflow of load-analyze-present wasn’t as efficient as they were expecting. The body of the problem was with loading and presenting IPv4 and IPv6 addresses, which are…
May 3, 2019The previous post surveyed connectivity benchmarks for ClickHouse to estimate general performance of server concurrency. In this next post we will take on real-life examples and explore concurrency performance when actual data are involved.
May 2, 2019ClickHouse is an OLAP database for analytics, so the typical use scenario is processing a relatively small number of requests — from several per hour to many dozens or even low hundreds per second –affecting huge ranges of…
Data services are the latest wave of applications to catch the Kubernetes bug. Altinity is pleased to introduce the ClickHouse operator, which makes it easy to run scalable data warehouses on your favorite Kubernetes distro. This webinar shows how to…
The Madrid ClickHouse Meetup is over. Having attended in person I can report it was excellent: well-organized with great content. The meetup venue was the Google for Startups Campus, which has a comfortable auditorium capable of holding over 100 attendees….
Apr 9, 2019When I was setting up my first ClickHouse clusters 3 years ago it was like a journey to an unknown world full of caveats. ClickHouse is very simple and easy to use but not THAT simple. Sometimes I…
Mar 27, 2019Many ClickHouse features like LowCardinality data type seem mysterious to new users. ClickHouse often deviates from standard SQL and many data types and operations do not even exist in other data warehouses. The key to understanding is that…
This post in two parts provides an overview of ClickHouse network configuration with lots of examples. In the first post we describe the overall connectivity design and configuration of listeners and ports. In the second post we describe how to…
This post in two parts provides an overview of ClickHouse network configuration with lots of examples. In the first post we describe the overall connectivity design and configuration of listeners and ports. In the second post we describe how to…
Extracting business insight from massive pools of machine-generated data is the central analytic problem of the digital era. ClickHouse data warehouse addresses it with sub-second SQL query response on petabyte-scale data sets. In this talk we’ll discuss the features that…
