Add random number / ID to cronjob URL and POST data

To prevent your web server from caching your script execution results, you should add random number to your cronjob URL using the keyword __random__

For example, you set up cronjob with the URL to call

http://yoursite.com/cron.php?__random__

or

http://yoursite.com/cron.php?name=value&__random__

Every time your cronjob is executed, the __random__ keyword will be replaced with a random number, e.g.

http://yoursite.com/cron.php?10386840

or

http://yoursite.com/cron.php?name=value&10386840

There are other keywords:

__timestamp__ will be replaced with current Unix timestamp

__cronjob__ will be replaced with the cronjob ID

You can also add those keywords into your POST data (only available with HTTP Method POST or PUT).