Ruby on Rails or Node.JS, who is the leader of 2017?
I think that use ruby or node.js depends on the purpose for what you want, for example if you want fast development and readable language maybe it is better ruby, if you want speed and to stream is better node.js, but more on this in this article https://www.imaginarycloud.com/blog/top-product-design-tools/ .
I agree. the choice really depends on what you need. If you look for a way to build a real-time application that requires processing a big number of concurrent connections, Node.js is the perfect match. If your project doesn’t require a lot of real-time functionality, Ruby on Rails is the way to go. More on this can be found in this article https://yojji.io/blog/ruby-on-rails-vs-node-js