v.18.16Improvement

Accelerated Server Start with Large Number of Tables

Accelerated server start when there is a very large number of tables. #3398
Accelerated server startup time when managing a very large number of tables.

Why it matters

This feature addresses the issue of slow ClickHouse server startup when the database contains a huge quantity of tables. It optimizes internal processes to significantly reduce startup duration, improving operational efficiency and usability for large-scale deployments.

How to use it

The acceleration is applied automatically when upgrading to the version containing this feature. No additional user configuration is required to benefit from the improved startup performance.