`query_cache_size`

Description: Size in bytes available to the query cache. About 40KB is needed for query cache structures, so setting a size lower than this will result in a warning. 0, the default before MariaDB 10.1.7, effectively disables the query cache.

Warning: Starting from MariaDB 10.1.7, query_cache_type is automatically set to ON if the server is started with the query_cache_size set to a non-zero (and non-default) value. This will happen even if query_cache_type is explicitly set to OFF in the configuration.

Commandline: --query-cache-size=#
Scope: Global
Dynamic: Yes
Data Type: numeric
Default Value: 1M (>= MariaDB 10.1.7), 0 (<= MariaDB 10.1.6) (although frequently given a default value in some setups)
Valid Values: 0 upwards in units of 1024.