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What is Node.js? What is Node.js used for?

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What is Node.js?
Node.js is built on Google’s V8 JavaScript engine. Node.js allows for the creation of highly scalable and lightweight server-side web applications in the form of social networks, large databases, or image hosting services, among others.
Node.js is an open-source server-side JavaScript environment designed to build scalable network applications through non-blocking I/O (input/output). It allows for high performance and scalability by using event-driven, asynchronous I/O models - rather than traditional threading or blocking I/O models that are typical of other languages like Java or Ruby, or Python It has a package ecosystem that supports thousands of libraries written in different programming languages to be used with Node.js applications.

What is React?

Why learn Node.js?
• It allows them to write code in JavaScript, which is the most popular programming language today.
• It has a large developer community and has a wide range of libraries and tools that can be used to build an application with ease.
• Node’s asynchronous non-blocking I/O model makes it perfect for high scalability web services as it does not need to wait for blocking operations such as database or file system accesses to complete before continuing the execution of the program, such as in other languages like PHP or Ruby on Rails

Why use Node.js?
• It executes JavaScript code outside of a browser, which makes it much faster than JavaScript apps running inside web browsers.
• Node.js is built on Google’s V8 JavaScript engine and offers much better performance than other server-side languages like Ruby, Python, or Java.
• It also allows the developer to use npm (node package manager) to install node modules that can be reused by any node application.
• Developers don't have to write more code, they just have to search for the module they need on npm and then install it with one line of code from the terminal window.

What is ASP.NET? What is ASP.NET used for?

Features of Node.js
• It's a non-blocking I/O model.
• Lightweight design and scalability.
• Asynchronous event-driven programming model with callbacks.
• Streaming data support for programming web client-side or backend apps easily with one language.

What is New in Node.js?
Node.js is an event-driven I/O framework that uses an asynchronous programming model. This makes it different from most other programming models where I/O operations block the thread of execution until completion, making Node a highly scalable solution for servers that have a lot going on at the same time. Node also provides a rich library of modules that can be combined to create a custom web application with server capabilities

What is PHP? What is PHP used for?

Use Cases for Node.js
1) Express framework: Node.js’s most popular web application framework uses Node's built-in APIs to provide a more robust set of functions, like error handling and templating, than the standard HTTP module.
2) Socket.IO: This library provides real-time bi-directional event streaming over TCP or WebSockets that lets you think about your web application as live data rather than static content.
3) MongoDB: MongoDB is one of the most popular NoSQL databases in the world with a rich set of features not found in other databases including JSON support, dynamic queries, geospatial indexing, querying with regular expressions

Ammar Javed

Ammar Javed

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