v.23.2Improvement

Query Cache Server-Level Settings Now Reconfigurable at Runtime

The query cache's server-level settings are now reconfigurable at runtime. #45758 (Robert Schulze).
The query cache's server-level settings in ClickHouse can now be reconfigured at runtime without needing a server restart.

Why it matters

This feature allows database administrators to adjust query cache configurations dynamically to optimize performance and resource usage without causing downtime or interrupting query processing.

How to use it

Administrators can modify query cache settings using the SET command or update the configuration files and apply changes immediately at runtime, enabling more flexible and responsive cache management.