Author here. I haven't done too much with Elixir yet, other than this Phoenix app, but I am totally enamored of it from what I've seen. First and foremost, the

Author here. I haven't done too much with Elixir yet, other than this Phoenix app, but I am totally enamored of it from what I've seen. First and foremost, the community is absolutely the friendliest, most helpful group of folks. I'm happy with its performance. Phoenix feels similar to rails to me (I'm primarily a rails dev), but with easily 10X performance. And the concurrency. Oh, the concurrency. This is Erlang's bread and butter, and Elixir and Phoenix are built to take complete advantage of this. I love that every request gets its own Erlang process, and you don't have to worry about it blocking anything else. The Erlang scheduler will keep it fair, cutting off any long running computation if it has to, to keep the latency down on new requests. I really like how interesting and mind bending Elixir's purely functional, process-oriented approach is. Nothing (well, very little) is mutable! You can sort of simulate mutation by spinning up a little infinitely looping tail-recursive process and sending messages to it. I encourage you to go through the excellent Elixir Getting Started guide [0], and in particular the "Processes" section for more on this. But I think the thing I like most about it so far, is the introduction to battle-tested Erlang approaches to robustness (OTP). This is a set of abstractions and libraries that have been iterated on over the years and are a fantastic way of building an app that's resilient to failure. Elixir, as it does, takes these abstractions and libraries, and puts enough sugar and consistency over them to make them a joy to use. I find this approach [1] supremely elegant (it's erlang, but applicable to elixir). [0] http://elixir-lang.org/getting-started/introduction.html http://elixir-lang.org/getting-started/introduction.html [1] https://medium.com/@jlouis666/error-kernels-9ad991200abd https://medium.com/@jlouis666/error-kernels-9ad991200abd