Scaling public API response is a major headache for SaaS application developers. GraphCDN has an innovative solution for GraphQL, a popular species of web service API. They offer a flexible content delivery network (CDN) that can deliver API responses to…
We like ClickHouse. We also like showing new ways to present ClickHouse data. We are therefore happy to announce the Altinity ClickHouse Tableau Connector. It’s in beta and available for use.
Our previous blog article on Apache Superset showed how to set up Superset and connect to ClickHouse. In this follow-on we get to the fun part: visualizing data using dashboards with a few of the plethora of charts that Superset…
Apache Superset is a powerful business intelligence tool that offers creative ways to view and explore data. It is also increasingly popular among ClickHouse users. In Part 1 of this blog series we will show how to install Superset and…
We are proud to announce the Percona Live community analytics track, organized by Altinity. There are so many great talks on up-and-coming data warehouses and databases. Join us May 12-13, 2021!
Grafana and ClickHouse are a very popular combination for interactive dashboards on big data. In this presentation, we’ll show you how to install Grafana on ClickHouse, and lead you through the steps to create nice-looking dashboards of your own. The…
Access control is one of the essential features of database management. Starting in late 2019 ClickHouse contributor Vitaly Baranov began to introduce robust, full-featured Role Based Access Control (RBAC). As a result of this work–which included a huge number of…
Open source licenses are in the news again. Elastic recently changed the licensing for ElasticSearch and Kibana from Apache 2.0 to a choice of Server Side Public License (SSPL) or the non-open source Elastic license. Like most open source licensing…
Did you know that ClickHouse has a built-in Web UI? The Web UI is a simple but extremely useful feature Alexey Milovidov added to ClickHouse in October 2020. In this short article I’m going to show you how it works…
Editor’s Note: This blog article is also posted on the official ClickHouse blog. We would like to thank Alexey Milovidov, Ivan Blinkov, and Alexander Zaitsev for their kind assistance. One of the great “features” of ClickHouse is a friendly and…
This final article completes our tour of array capabilities. We’ll survey functions for array map and reduce operations, demonstrating behavior and commenting on performance. This is an opportunity to dig further into lambdas, which are critical for using arrays effectively.
ClickHouse arrays combine neatly with GROUP BY aggregation. We show how arrays track sequences and offer a couple of ways to do funnel analysis.
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