From time to time, I get a customer request to configure/optimize a MySQL server, and usually, when the customer has already installed the MySQL Server, usually, it’s an “old” version. It’s ok if your software uses features that only work on some specific version of a Database, but keep an eye open for its end of life support. And that EOF is coming to MySQL 5.6. Below you can see a table with the MySQL versions and their ending date.
So, next time you need to configure a new server, keep an eye on the version you’re using.