On a related note, here are some interesting articles.
Abstracting MySql results in PHP
If there is one thing a web server does everyday it iss connecting to the database. I have been using PHP for many years now, but if you ask me to write a script to fetch data from the database I couldn't do it without going back to the Ultimate PHP manual to find a few examples first.
Creating your own CDN with Nginx
If you've used WordPress, then you know that it has a nice little folder called upload where all the pictures and videos you upload get stored. This is all fine and dandy, until people start accessing those assets.