MySQL introduced the Event Scheduler in version 5.1.6. The Event Scheduler is a MySQL-level cron job, which will run events inside MySQL. Up until now, this was not a very popular feature, however, it has gotten more popular since the adoption of Amazon RDS  as well as similar MySQL database as a service offerings [&]

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http://www.percona.com/blog/2015/02/25/using-mysql-event-scheduler-and-how-to-prevent-contention/