What is Node.js?

Node.js is a platform built on Chrome’s JavaScript runtime for easily building fast and scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.

Node.js is utilized in real-time web applications employing push technology over websockets. Node.js overcame the challenge of request-response paradigm and it shifted the server-client communication as real-time, two-way connections.

How Does It Work?

The main idea of Node.js: use non-blocking, event-driven I/O to remain lightweight and efficient in the face of data-intensive real-time applications that run across distributed devices.

Node.js is a platform that fills a particular need and understanding its functions is absolutely essential.

Where can Node.js be used?

Node.js can be used in the following applications:

Chat:

Chat is the most typical real-time, multi-user application. The chat application is exactly where Node.js can be used because the chat application is lightweight, high traffic, a data-intensive application that runs across distributed devices. It’s also a great use-case for learning too, as it’s simple., yet it covers most of the paradigms you’ll ever use in a typical Node.js application.

Queued Inputs:

Imagine your app receiving a high amount of concurrent data, this can create a bottleneck in the database. At such situations, Node.js can easily handle the concurrent connections themselves.

Data Streaming:

In traditional web platforms, HTTP requests and responses are treated like an isolated event; but they are actually streams. Here Node.js can be used to process files while they are still being uploaded, as the data comes in through a stream and we can process it in an online fashion.

Proxy:

Node.js is employed as a server-side proxy where it can handle a lot of simultaneous connections in a non-blocking manner efficiently. It’s especially useful for proxying different services with different response times or collecting data from multiple source points.

Dashboard:

Node.js can be used in various dashboards such as Stock Trader’s Dashboard, Application Monitoring Dashboard, System Monitoring Dashboard.

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