I was following this tutorial https://www.digitalocean.com/community/tutorials/how-to-install-and-use-memcache-on-ubuntu-14-04. Unfortunately I don't think it worked because I'm running the stock Ubuntu 14.04 image for Ruby on Rails that runs on Nginx and Unicorn. So when I do the steps in those instructions I get all sorts of fails during the step (associated with apache2):

sudo apt-get install mysql-server php5-mysql php5 php5-memcached memcached

So can someone please provide modified/alternative instructions for the Nginx/Unicorn case and Ruby on Rails (ideally for use with the Dalli memcached client)?