Deep Dive on ClickHouse: Sharding and Replication Webinar

Deep Dive on ClickHouse: Sharding and Replication Webinar

This talk walks you through sharding and replication, showing how Altinity experts enable clusters that deliver fast queries over petabytes of data. Starting with basic definitions of each, then moving to practical issues.

A New Way to Restore ClickHouse After ZooKeeper Metadata Is Lost

A New Way to Restore ClickHouse After ZooKeeper Metadata Is Lost

Every ClickHouse user has experienced data loss due to user error or operational failure with Zookeeper at least once in their lifetime. If a failure resulted in metadata loss, ClickHouse tables can turn into pumpkins–you can query but you cannot…

Webinar: Introduction to the Mysteries of ClickHouse Replication

Webinar: Introduction to the Mysteries of ClickHouse Replication

Built-in replication is a powerful ClickHouse feature that helps scale data warehouse performance as well as ensure high availability. This webinar will introduce how replication works internally, explain configuration of clusters with replicas, and show you how to set up…

Realtime replication from MySQL to ClickHouse in practice

July 2, 2018Vladislav Klimenko from Altinity and Valery Panov from Ivinco presented a talk at HighLoad Siberia 2018 conference recently. They described the real problem that Ivinco faced and how it has been solved with migration of analytics from MySQL…

Circular Replication Cluster Topology in ClickHouse

Circular Replication Cluster Topology in ClickHouse

In some cases, there is a need to configure a distributed cluster with replication but there are not enough servers in order to place every replica on a separate node. It is better to have multiple replicas at the same…

Archiving MySQL Tables in ClickHouse

Archiving MySQL Tables in ClickHouse

Why Archive? Hard drives are cheap nowadays, but storing lots of data in MySQL is not practical and can cause all sorts of performance bottlenecks. In this article Percona’s blogger Alexander Rubin is talking about archiving MySQL tables in ClickHouse for storage and…

ClickHouse Data Distribution

Jun 5, 2017   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 perspective