The author compares Spring and Java EE vs. Node.js. But these three things can do very different things. It would be better to compare Node.js with something li

The author compares Spring and Java EE vs. Node.js. But these three things can do very different things. It would be better to compare Node.js with something like Reactor or RxJava and a reactive Web framework like WebFlux. > Dahl’s experience was that using threads made for a heavyweight complex system. He sought something different, and spent a couple years honing and refining a set of core ideals arriving at Node.js. The result was a light-weight system, a single execution thread, an ingenious use of JavaScript anonymous functions for asynchronous callbacks, and a runtime library that ingeniously implemented asynchronicity. He cured the symptom with an oversimplified solution. Having only one thread per process is a severe limitation. It would have been better, to create good APIs (like Reactor or Kotlin coroutines) or language-level solutions (like Rust) to handle multi-threading. > In Java. Listeners require creating a concrete instance of an abstract interface class. That is no longer true, since event handlers can be defined as anonymous functions since Java 8 (from 2014). > Another learning: Most programming languages obscure the programmers intent, making it harder to understand the code. The author mixes Java the language, Java the platform and libraries/frameworks, so it is worth pointing out, that the Java ecosystem is not limited to the Java language. Using Kotlin or Scala would remove his reasons to complain. > JavaScript, by contrast, has loosey-goosey typing. The theory is obvious: The programmer has no certainty what kind of object they’ve received, so how can the programmer know what to do? You have to make certain assumptions to handle incoming data, but it would be good for robustness and security to make these assumptions explicit. And, really, converting a Json string into a Java object is a single line calling Jackson and maybe a few annotations. The section about modules could be applied to Java 9+ as well.