Cache Router with Memcached

sudo apt-get install memcached php5-memcache
sudo invoke-rc.d apache2 restart
sudo vim /etc/php5/conf.d/memcache.ini 
# uncomment the extension=memcache.so line

This will automatically put memcached in your runlevel startup as well.

* Note: *make* sure memcached is running! Or else you'd feel like the site is "hanging" *

* Note: *make* sure you reload/restart/empty memcached once in a while when cache weirdness occur *