CouchDB and Erlang
Erlang is great. Very reliable and very easy to make reliable robust systems. But it’s a very small ecosystem, and the investment around tooling and performance is lacking compared with other popular languages. I want Erlang to become mainstream. There is no reason Erlang can’t be a fast or faster than Java, but it’s odd syntax turns people off, limits it’s popularity, and therefore it’s commercial investment. But I still love Erlang, and we’ll still use it for many critical components, just less and less for the performance critical components.