Query caching is one of the prominent features in MySQL and a vital part of query optimization. It is important to know how it works as it has the potential to cause significant performance improvements  or a slowdown  of your workload. The MySQL query cache is a global one shared among the sessions. It caches [&]

The post The MySQL Query Cache: How it works, plus workload impacts (good and bad) appeared first on MySQL Performance Blog.

http://www.percona.com/blog/2015/01/02/the-mysql-query-cache-how-it-works-and-workload-impacts-both-good-and-bad/