The ServerBorn blog

Notes from the forge.

Performance engineering, security hardening, and WordPress operations. Written by the people who run the metal.

How CDNs Work: From Origin to 300 Edge Cities

Follow a single page request as it travels from a visitor's browser to the nearest edge server and back, and learn why cache hierarchies, tiered caching, and origin shields matter for your WordPress site.

by Robbie·Jun 9, 2026·5 min read

The Transients API: Caching Expensive Work Inside WordPress

Transients let you store the result of a slow API call or heavy query so WordPress does not repeat that work on every page load. Here is how to use them correctly, including how they behave once a persistent object cache is in the picture.

by Robbie·Jun 6, 2026·5 min read

CSRF: The Attack That Rides Your Login Session

Cross-site request forgery tricks your browser into spending your login session on the attacker's behalf. Here's how it works, how WordPress's nonce system helps, and what to check when a plugin's defenses are not enough.

by Robbie·Jun 5, 2026·5 min read