Physical memory was limited and Apache and MySQL soon started to fight for every remaining byte and eventually the page was unavailable. After this experience I started to look for a alternative for the database storage and I found an interesting one: SQLite.
He mentions some of the features the database has including zero-configuration, a simple API, and the portability of having a single database in a single file. The next step was getting it to work with his Apache/PHP5 installation and to run some statistics on it. The results show SQLite pulling ahead of MySQL (INNODB) by a bit and MySQL (MYISAM) by a good bit.