Caveat before reading my comment: this article is from 2007 and the scene 8 years later is pretty different but the spirit still holds, I think. The author also specifically placed "pet programming language" in the article's title which makes my reaction to it a bit unsound since, for example, Haskell is not a "pet programming language". WhatsApp built a 19B product on-top of Erlang. I'm building our startup's produc…
Erlang is a very fascinating language. I am currently working on a small scale state and signaling system built in Java. After looking into Erlang, its way of dealing with similar problems is more elegant and much more scalable.