If WordPress Cron Job isn’t getting triggered on-time, which is common if the blog does not get a lot of traffic, WordPress cron can be setup to use a real Linux crontab to make it trigger on-time. If you don’t have access to the Linux command line for your server, then ask your webhost to setup this up for you.
In wp-config.php disable WP Cron:
Open a Linux terminal command line window and enter:
Now press the i key to insert a new line and paste the following with your domain name:
Now press the Esc key, and then the keys :wq, and enter, to save your changes.
This will fire the cron every 2 minutes.
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A cron job for every two minutes can also be written like this: “*/2 * * * *”.