Time delay in Mysql command

Question

I would like to execute a mysql command after 5 minutes after a click on the browser by the client.

Is there a way to achieve this in pure MYSQL ?

Is there a way to have a "queue system" as well ?

Execute 1 time : run in 5 minutes

Execute 2 times : run in 5 minutes after the 1 time

Answer 1

SELECT SLEEP(5), detail on http://mysqlresources.com/documentation/date-time/sleep .

Having said that you should handle it in your application rather that database. If you do it on database less connection could be made and application pool maybe exausted.

Answer 2

It would be preferable to seperate the things, to avoid timeouts and other nasty errors.

You could use cron, or similar, to schedule the execution of a PHP script, like this one:

*/5 * * * * wget -O /dev/null -o /dev/null example.com

Kindly borrowed from here .

It would be preferable to create a script that gets called by wget every 5 minutes, and create a table in MySQL for the queue, and add logic to the called script.