Node.js is useful for creating real-time applications that produce a lot of I/O activities, which in turn means apps that get a lot of traffic.

These consist of:

• Game apps;


• Project management tools and social networking tools;


• Applications for audio and video broadcasting;


• Message boards;


• IoT gadgets and software;

• Since Node.js is based on Google Chrome’s V8 JavaScript Engine, the library executes code incredibly quickly.


• Due to its system, which enables the server to reply without delay, it is very scalable.


• A large open-source community that uses Node.js has contributed to the creation of numerous top-notch modules that provide Node.js applications with new functionality.


• Applications written in Node.js output the data in chunks without ever buffering it.


• One of the most widely used programming languages for front-end development is JavaScript, and almost every front-end developer is familiar with it. Therefore, switching to Node.js for the back end is significantly simpler for developers. Even a novice JavaScript coder may learn and use it with minimal time and effort.


• With Node.js, you can create anything from the ground up and customize every little element. It can perform fundamental tasks but only provides the base essentials upon installation, enabling you to add functionality with fewer limitations.

• The lack of consistency in Node.js is one of its main drawbacks. The API for Node.js is constantly evolving, and these changes are usually backward-incompatible. When this occurs, developers must update the current code base to conform to the most recent Node.js API release.


• Node.js is un-opinionated. This might provide you freedom, but it can also slow down your work by decreasing productivity.


• It is not appropriate for carrying out time-consuming calculations. Incoming requests are delayed by complicated calculations, which might reduce performance. Node.js is perfect for complicated projects, but it might not work for software that needs a lot of processing power.

Streams are primarily those elements that provide both reading and writing of data to and from a destination. There are four primary categories of streams, as follows:

• Easily readable: this stream promotes a reading operation.


• Writable: it facilitates the writing process.


• Duplex: the stream enables reading and writing.


• Transform: this type of duplex operation performs computations while taking the input into account.