To know what a Node.Js developer is and what it is for, we believe that you first have to talk about the definition of what Node.Js is.
Node.js is a JavaScript runtime environment (this is why .js letters are still present, simply for hinting at JavaScript language). This real-time runtime environment includes everything that is needed to run a program written in JavaScript. Node.js was created by the original JavaScript developers.
And how it works? The V8 engine compiles Javascript in native machine code instead of interpreting it in the browser, thus achieving a much higher speed. Node is open source and can be run on Mac OS X, Windows and Linux.
Traditionally, Javascript has been used only for minor tasks in the browser, but today it is already a programming language as powerful as any other. In addition, JavaScript has an excellent event model ideal for asynchronous programming.
JavaScript is a language known by millions of programmers, so Node’s learning curve is small, since it is not usually necessary to learn a language from scratch.
With these elements, we can now enter the developer’s territory. Node.js shines in real-time web applications using push technology through Websockets.
Examples where Node.js should be needed:
Chat
It is the most typical real-time and multi-user application. From IRC (on the day), through many owners and open protocols spinning on non-standard ports, with the ability to instrument everything in Node.js with websockets running over standard port 80.
The chat app is really perfect for Node.js: it is light, it has high data intensive traffic (but low/compute processing) and it is an app that works on distributed devices. It is also a great use case for learning as it is too simple but at the same time it covers most of the tools you can use in a typical Node.js application.
Data Transmission
On more traditional web platforms, HTTP requests and responses are treated as isolated events; in fact, they are really ordinary. This observation can be used in Node.js to build some cool features. For example, it is possible to process files while they are being uploaded, since the data enters through a stream, and can be processed in a fashionable line. This could be done in real time for audio or video encoding, as a proxy between different data sources (see next section).
PROXY
Node PROXY.js is used as a proxy server which can handle a large number of simultaneous connections in a non-blocking mode. It is especially useful for proxying different services with different response times, or for collecting data from multiple points of origin.
So, a Node.js processor is the person responsible for writing the logic of the server-side web application in JavaScript or its variants, such as CoffeeScript, IcedCoffeeScript, among others. Typically, the Node.js developers, the background components, connect the application to it and support front-end developers by integrating their work with the Node.js application.
Doing a great job description for a Node.js developer needs to be mindful of concerns. When you’re looking for an advanced Node.js developer, posting a generic description of the web developer in your job posting will bring in many people who may well be skilled in creating user interfaces, some web designers, but all with little knowledge about programming.
