For a current project at WhoScored, I needed to learn JavaScript, Node.js and WebSocket channel, after seven years of writing web applications with Java and Spring framework. We wanted an application that can send data to thousands of concurrent users, and Node.js appeared to be the right way of doing it with its event-driven, non-blocking I/O model that can scale up easily. Firstly, to learn Java
![Finding the right Node.js WebSocket implementation](https://cdn-ak-scissors.b.st-hatena.com/image/square/7bbb7513a40c19bc424091d65a9e62d4e896cf54/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A1200%2F1%2ARrKQrpOqLNPh6NJQ_InjXg.jpeg)