MySQL query cache stats

Admin dashboard widget measuring and monitoring MySQL / MariaDB query cache performance & statistics - to optimize sizing configuration and highlight bottlenecks. Why Database Query for Options Autoload is repeatedly executed for each WP page load and its poor performance has been identified as a good indicator for a poorly performing database resulting in slow site. How

• Use dashboard widget to measure and monitor Options Autoload Query Time
• Use dashboard widget to measure and monitor Options Autoload Query Size This query result size increases constantly over time, as WP site usage grows - but its oversized sudden growth or constant balooning must not be overlooked. Heavy plugins might rely heavily on adding data to Options Autoload Query Size. Poorly written plugins causing WP performance degradation have been found to constantly increase this query result size.

Time Metrics 'Options Autoload Query Time' is measured in milliseconds (ms) 0 ms - great performance below one millisecond 1-2 ms - good performance 3-5 ms - OK performance 50+ ms - poor performance should be investigated Size Metrics 'Options Autoload Size' is measured in Bytes If you have the control to enable the database server wide query cache - configure query_cache_limit to be larger than Options Autoload Size 20,000 Bytes - freshly installed clean wordpress site 30,000 Bytes - small wordpress site 50,000 Bytes - medium wordpress site 250,000 Bytes - large wordpress site 2,000,000+ Bytes - too large should be investigated ( all above are rough metrics )

1.0.4

• Added wp_options Autoload Query Time

1.0.3

• Added wp_options Autoload Size

1.0.2

• Added Database Size
• Added Refresh button

1.0.1

• Added Questions, removed Queries Query cache does not cache statements executed within stored programs. Queries differs from Questions in that it also counts statements executed within stored programs. Questions differs from Queries in that it doesn't count statements executed within stored programs.
• Added widget button RESET QUERY CACHE Execute database command RESET QUERY CACHE.

1.0

• First release