In my project (SpringRing, now Aloha) the metaphore for this cycle is "make it scalable". So, in order to document myself on the topic I have lurked the Internet and found these interesting websites/products
Especially the last one is a great source of information on the topic of scalability.
I bookmarked these and others in my del.icio.us archive
Please let me know if you have any other pointers.
One Line of Code that Compromises Your Server
11 hours ago