ch-workload is a Python package and CLI tool that generates declarative workloads for ClickHouse clusters. It supports sharding, replication, and various testing scenarios, making it useful for database administrators and developers who need to simulate realistic database loads. The tool is open source under the MIT license.
ch-workload is a Developer Tools project. It focuses on generating realistic, declarative workloads to test and benchmark ClickHouse clusters. It is built as an open-source project for developers. ch-workload is open source under the MIT license. It runs on the command line.
It is developed by O2eg, and it first shipped in 2026. Development happens publicly on GitHub with 3 commits in the last 90 days. Key capabilities include Declarative Workloads, Sharding Support, and Replication Testing.
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