How to modify WordPress’ robots.txt file with PHP

In a default WordPress installation, the robots.txt file does not exist in your web site’s root directory. WordPress dynamically generates robots.txt content for your web site when it receives a request for the robots.txt file. The technique shown in this article will modify the contents of WordPress’ dynamically generated robots.txt contents.

Do Unix Domain Sockets boost WordPress performance?

The WordPress codex mentions using Unix Domain Sockets for database connections. But does it improve performance? This article explains how to use Unix Domain Sockets and tests their performance.