Good evening friends, I have a site with a relative number of users accessing and next to it an administrator function that visualizes the return time of all the querys that the page needs.
I used a lot of caching but decided to leave the queries directly in the database to load those data.
Usually the values vary greatly, eg: - 6ms, 18ms, 23ms, 30ms.
I'm not being paranoid, but would like to know what can lead to these variations?