If you're interested in the deployment process at Facebook, look at the link of a Facebook engineers paper I submitted in my other comment in this thread : http

If you're interested in the deployment process at Facebook, look at the link of a Facebook engineers paper I submitted in my other comment in this thread : https://news.ycombinator.com/item?id=7648802 https://news.ycombinator.com/item?id=7648802 "The deployed executable size is around 1.5 Gbytes, including the Web server and compiled Facebook application. The code and data propagate to all servers via BitTorrent, which is configured to minimize global traffic by exploiting cluster and rack affinity. The time needed to propagate to all the servers is roughly 20 minutes."