Hi Apapsch, In the latest version on MySQL 5.7 the query cache settings are actually deprecated and by default the query_cache_type is set to 0 (disabled). In this case it does not really matter that much if the query_cache_size is set to 1M (default) or 0. [url]MySQL :: MySQL 5.7 Reference Manual :: 5.1.7 Server System Variables So in the latest version of 5.7 you can not even set it at all (as it is default set to 0). Let me know if you will have any other questions.
Alex