The difference between node.js and express.js in the level of abstraction:
-> Express.js is a framework based on node.js for building web-application using principles and approaches of node.js
Functional programming seems to be where the hype is nowadays — And for good reason; It can drastically reduce the amount of boilerplate code that you have to write in comparison to imperative programming which allows you to improve the readability of your code and consequently, maintainability.
The main goal of this blog is to explain the “Architecture of Nodejs” and to know how the Nodejs works behind the scenes. Generally, most of the server-side languages, like PHP, ASP.NET, Ruby, and including Nodejs follows multi-threaded architecture. That means for each client-side request initiates a new thread or even a new process.