Buffers, Caches and Threads

MariaDB makes use of a number of buffering, caching and threading techniques to improve performance.

Title Description
Thread Pool MariaDB thread pool
Thread States Descriptions of the various thread states
InnoDB Buffer Pool The most important memory buffer used by InnoDB.
InnoDB Change Buffering Buffering INSERT, UPDATE and DELETE statements for greater efficiency.
Query Cache Caching SELECT queries for better performance.
Segmented Key Cache Collection of structures for regular MyISAM key caches
Subquery Cache Subquery cache for optimizing the evaluation of correlated subqueries
Thread Command Values Thread command values from SHOW PROCESSLIST or Information Schema PROCESSLIST Table
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