WhatsApp: a killer app for erlang and FreeBSD

[Joakim via Digitalmars-d]

Just ran across this talk and blog post from earlier this year, 
interesting how they leveraged the great concurrency of erlang 
and efficiency and instrumentability of FreeBSD to build a highly 
scalable mobile chat app with few servers and a very small team:

http://highscalability.com/blog/2014/2/26/the-whatsapp-architecture-facebook-bought-for-19-billion.html
http://www.youtube.com/watch?v=c12cYAUTXXs

Something for D people to think about as we try to come up with 
our killer app. ;)