What is Node.js

Node.js is a technology that runs JavaScript independently of your browser. We can say that this is a standalone environment for executing JavaScript.

Node.js, like Python, may be placed on a server and executed, displaying the results of execution to users. On it, you can make separate applications using additional frameworks.

Why Node.js is good

It is widely used by any node js development company. JS has a trick up its sleeve: it can run code in parallel (relatively speaking). This is referred to as event handling by programmers. “If this happens again, do that function over there; it knows what to do,” you may tell the program. Many similar events may be predicted; in fact, the processes appear to be parallel. The software might just sit and wait for anything to occur.

Moreover, processes are asynchronous: the program can request something at the very beginning of work – for example, ask something from the database. And, while the database is busy, the Node.js software will continue about its job. And when the answer comes, he will take it and process it.

When developing any Node.js program, there may be hundreds of such parallel events and handlers. To prevent any of them from pulling the blanket over themselves, Node.js makes an infinite loop in which it provides processor time to each function in a circle. As a result, the illusion is created that they work in parallel and do not interfere with each other, but in fact they are tightly controlled by the platform itself.

It is this even distribution of everything in the event loop that gives Node.js an edge when building server applications.

Example: Node.js web server

For example, on the page, you should display the user’s avatar and nickname.

To do this, the server made a request to the database to get this information from there.

Until the base responds, the server cannot do anything – it patiently waits.

The server is waiting.

When a response comes from the database with a picture and a nickname, the server comes to life again, continues loading the page, and at the very end asks the database for a background image for the site.

The server is waiting

The page also does not work yet, because it did not load completely. Half of the scripts don’t work either, because they wait for the page to fully load. Everyone is waiting for the base to respond.

For each such request, resources are needed to keep the connection with the database.

If there are many such requests, the resources on the server quickly run out, and then the site starts to slow down for everyone at once.

The server starts to blunt and sometimes falls out with an error. When pages crash, people panic and leave the site.


It is important to enable live interaction with minimal delay. Chat, games, constant social media updates, collaboration tools, e-commerce websites, real-time tracking apps, marketplace – each of these functions requires real-time communication between users, clients and servers over the Internet. Building a real-time application is difficult since it must handle hundreds, thousands, or even millions of users. Real-time communication between client and server requires fast and constant I/O. All of this may become possible in your website with the help of a product design and development company Fireart.

NodeJS is best suited for such applications. The synchronization process with NodeJS is fast and organized, as events drive the architecture serving both the client and server sides. The event loop through the web socket protocol handles the multi-user function. It works in TCP and avoids HTTP overload. NodeJS also makes RTA lightweight, scalable, maintainable, and user-friendly in terms of software development.

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