ClickHouse January 2024 Release – v24.1

Introduction Every new release includes new features, enhancements, and numerous bug fixes, and the ChistaDATA team always stays on top of the latest releases. On January 30, 2024, ClickHouse version 24.1 was released, and this […]

How to Avoid the Linux OOM Killer in ClickHouse

Introduction In numerous instances, this indicates an out-of-memory scenario. ClickHouse started utilizing excessive memory, prompting Linux to terminate it to avert system instability. The responsible Linux process for this action is the Out-of-Memory Killer, also […]

Why is ClickHouse so fast?

Introduction Online Analytical Processing Since Michael Stonebraker’s seminal 1986 paper that introduced POSTGRES (and consequently PostgreSQL) to the world, the relational database management system (RDBMS) has been synonymous with the word “database” and indeed the […]

Shard Rebalancing Methods in ClickHouse

Introduction Sharding is a pivotal concept in managing large-scale databases, especially when dealing with voluminous data that exceeds the storage capacity of a single server. This article explores the intricate world of sharding in ClickHouse, […]

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