A built-in WordPress file that handles scheduled tasks like publishing scheduled posts, checking for updates, and sending emails. It runs automatically each time a visitor loads a page. However, on low-traffic sites, tasks may be delayed, and on high-traffic sites, it can cause unnecessary server load. The main benefits are automated task scheduling without needing a real server cron job. Consider replacing wp-cron with a true system cron for better performance on high-traffic sites.
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