Benefits of Node.js
JavaScript is the language of the browser. There's no denying that. Next, let's examine the reasons why a developer should pick Node.js as the back-end language for their application. Although there are many reasons, here we've boiled it down to two factors—context switching and shared code.
Context switching
Context switching, or task switching, is when a developer is working on multiple projects, or in different languages, at the same time and has to switch between them regularly.
"Doing more than one task at a time, especially more than one complex task, takes a toll on productivity."
– Multitasking: Switching costs (American Psychological Association)
(http://www.apa.org/research/action/multitask.aspx)
Switching between projects
Programming is an activity that requires you to keep many variables in memory at the same time—variable names, interfaces of different modules, application structure...