There is no way to do that. You need to design a push solution instead of a pull one, and if you can’t and must have to use pull…. well than it sucks to be you :(. Web servers and web software is not designed to be used for “heavy lifting” in such frequent interval. … Read more
First of all you have to remember how WP cron works. The action will trigger when someone visits your WordPress site, if the scheduled time has passed. So if your site isn’t very crowded at 3am, the cron job won’t start exactly at 3am. (You should use real cron if you really need to run … Read more
Is it possible to use `wp_schedule_event` with real cronjobs?
Cron job script – loading wordpress system fails
How refresh wp_schedule_event without restart a plugin
Manual Cron job occasionally outputting WP die message
Take a look at the Transients API. It’s meant to store data temporary. Note, that this doesn’t replace a cron job, as it needs “Action” on the site. So if the site isn’t requested, where you set/alter/delete a Transient, then nothing happens.
Take a look at the docs. That plugin uses Simplepie as an aggregator. Google results: http://simplepie.org/wiki/tutorial/setting_up_a_cron_job_with_simplepie
You should set up a cron job on the server to do what the plugin authors are asking you to do: execute the php command they’ve given you. Just make sure you’re not setting up WordPress’s wp_cron(), since this one is not a real cron job. From this article: When it comes to WordPress, you … Read more
Will they wait until the next hit to wp-cron.php (+8 hours)? Yes. That’s why it’s important to keep this duration shorter. I usually keep it to every 5 minutes. PS: I know it’s an old question. But, wanted to answer it anyway, if someone else has the same question in the future.