Harnessing the Power of ClickHouse Arrays – Part 1

Harnessing the Power of ClickHouse Arrays – Part 1

ClickHouse contributors regularly add analytic features that go beyond standard SQL. This design approach is common in successful open source projects and reflects a bias toward solving real-world problems creatively. Arrays are a great example.

What we learned by closing a $4M investment from Accel

What we learned by closing a $4M investment from Accel

I’m pleased to share the news that Altinity has raised a $4M seed investment from Accel, led by Dan Levine. We are honored by Accel’s trust and delighted to work with Dan. We plan to use the investment to roll…

ClickHouse Data Integration — September 2020 Meetup Report

ClickHouse Data Integration — September 2020 Meetup Report

Our last ClickHouse SF Bay Area meetup was on September 10th and focused on data integration. This turned out to be a popular subject. We had well over 100 signups with 59 people in attendance. This article summarizes the talks…

Using Joins in ClickHouse Materialized Views

Using Joins in ClickHouse Materialized Views

ClickHouse materialized views provide a powerful way to restructure data in ClickHouse. We have discussed their capabilities many times in webinars, blog articles, and conference talks. One of the most common follow-on questions we receive is whether materialized views can…

MORE secrets of ClickHouse Query Performance

MORE secrets of ClickHouse Query Performance

ClickHouse is famously fast, but a small amount of extra work makes it much faster. Join us for the latest version of our popular talk on single-node ClickHouse performance. We start by examining the system log to see what ClickHouse…

ClickHouse Kafka Engine Tutorial

ClickHouse Kafka Engine Tutorial

Our colleague Mikhail Filimonov just published an excellent ClickHouse Kafka Engine FAQ. It provides users with answers to common questions about using stable versions, configuration parameters, standard SQL definitions, and many other topics. Even experienced users are likely to learn…

Monitoring ClickHouse on Kubernetes with Prometheus and Grafana

Monitoring ClickHouse on Kubernetes with Prometheus and Grafana

The ClickHouse Kubernetes operator is great at spinning up data warehouse clusters on Kubernetes. Once they are up, though, how can you see what they are actually doing? It’s time for monitoring!In this article we’ll explore how to configure two…