Elixir is a nicer to work with language that Erlang that compiles down to the Erlang VM. That gives it a better concurrency model and fault tolerance than Go.<p>Rails core team members have been building Phoenix. It&#x27;s syntax is built to be extremely familiar to Rails but it&#x27;s been built from the ground up to correct a lot of core issues that come up long term with Rails. It&#x27;s basically fast Rails.<p>You get a very equivalent level of productivity with performance and fault tolerance of Erlang. Benchmarks show performance on par with Go.<p>It&#x27;s really fascinating. I&#x27;ve been programming professionally for about 17 years now and it&#x27;s the first time I&#x27;ve been truly excited about a language for a long time.