Blog

Guides from the NOC

Written from running the hardware — what breaks, why, and the command that fixes it.

1 post matching “admin-ajax” · Clear

All 1 Most read WordPress 1
WordPress WordPress Heartbeat API Eating CPU? Here's How to Fix It

admin-ajax.php spiking your server's CPU every 15-60 seconds? Learn what the WordPress Heartbeat API does and how to safely throttle or disable it.

15 July 2026 · 5 min