WordPress's built-in cron scheduler silently fails without site traffic

WP-Cron, WordPress's task scheduling system, does not operate like a true cron job — it only triggers when a visitor loads a page, meaning low-traffic sites can go hours or days without running scheduled tasks. Critical functions such as backups, scheduled posts, and update checks can silently stop working without any error or warning. A common fix involves disabling WP-Cron in the config file, but if a real system-level cron job is not set up as a replacement, the scheduler becomes completely inactive. The danger is compounded by the fact that monitoring tools report no errors, since a dead scheduler produces no events — only an absence of expected activity. Developers are advised to both disable WP-Cron and configure a server-level cron job, while also implementing proactive checks that confirm scheduled tasks are actually completing.