Node.js is a cross-platform runtime environment and library for running JavaScript applications outside the browser. It is used to build server-side and networking web applications. It is open-source and free to use.
What is Node.js
Node.js is a cross-platform runtime environment and library for running JavaScript applications outside the browser. It is used to build server-side and networking web applications. It is open-source and free to use.
Many basic modules of Node.js are written in JavaScript, Node.js is mostly used to run server applications in real-time, the definition given by its official documentation is as follows –
Node.js is a platform built on Chrome's JavaScript runtime to easily build fast and scalable network applications. Node.js uses an event-driven, non-blocking I/O model, which makes it lightweight and efficient, and which is perfect for data-intensive real-time applications across distributed devices. runs.
What is Node.js
Node.js provides the user with an open-source, cross-platform runtime environment. You can use it for developing server-side web applications. Node.js applications are written in JavaScript and can be run on a variety of operating systems. Node.js is based on an event-driven architecture and a non-blocking input/output API, designed to optimize the throughput of an application and scalability for real-time web applications.
Over a long period of time, the frameworks available for web development were all based on a baseless model. A stateless model is one where data generated in one session (such as information about user settings and events) is not retained for use with that user in the next session. There was a lot of work to be done for the user to retain session information between requests. But with Node.js, there is finally a way for web applications to have real-time two-way connections. Where both client and server can initiate communication, allowing them to exchange data independently.
Why use Node.js?
Over the years, most applications were based on a stateless request-response framework. In these types of applications, it was up to the developer to ensure that the correct code was entered to maintain the state of the web session while working with the user's system. But with the Node.js web application, you can now work in real-time and have 2-way communication. The state is maintained, and either the client or the server can initiate communication.
Features of Node.js
Extremely fast – Node.js is built on Google Chrome's V8 JavaScript engine, so its library is very fast in code execution.
Single-threaded – Node.js follows a single-threaded model with event looping.
Highly Scalable – Node.js is highly scalable, as the event mechanism helps the server to respond in a non-blocking manner.
License – Node.js is released under the MIT license.
No buffering – Node.js cuts down on the overall processing time when uploading audio and video files. Node.js applications never buffer any data. These applications simply output the data in chunks.
Open source – Node.js has an open-source community that has created many excellent modules to add additional capabilities to Node.js applications.