Other than existing code bases, what's the advantage of using Ruby for new projects these days when better tools exist? For example, Elixir - ergonomics of Ruby but cleaner functional approach, distributed and much faster for typical web apps.
Elixir is well suited for a lot of things Ruby is but also has some shortcomings. For instance, the albeit growing community and available libraries is just not on the same level as Ruby. Furthermore the amount of available engineers knowing elixir can be a problem when hiring (ofcourse these can be trained internally) but in general hiring will be a tad bit harder.
Whilst I agree with you on the technical side (language is cleaner and obviously more performant) I do not agree on the statement dat Elixir is a better tool, as with a lot of things in software it depends.
Better is a very personal thing :) I like the ecosystem of ruby, always did and never had a reason to change.
May I? Thanks!
At TuneCore we've already replaced a lot of our micro-services with Elixir/Phoenix/Broadway or Go and we've saved quite a bit of cash of server costs.
Right tool for the right job and all that jazz.