This is possible because of callbacks and promises.Ĭallbacks and promises. So, instead of waiting for the function to complete after fetching the data, Node.js will run the next requests, while processing the I/O ones (like fetching data) in the background. Node.js runs JavaScript in a single thread, and the processing is asynchronous. In the world of synchronous operations, this means that the application would have to wait until the function receives data and does its work, ultimately blocking other operations (or the application would use other threads to run other operations.) Imagine that a function needs to fetch data from the network, process it, and then return the result. Non-blocking I/O and asynchronous request handling. The approach is called non-blocking input/output operations. The philosophy behind Node.js is to let the application do its work and perform operations even when the previous operation hasn’t been completed because of input/output bottlenecks. A never-ending supply of JavaScript frameworks is a thing with backend JS as well. Yet a Node.js programmer can use a number of dedicated frameworks such as Express, Meteor, Sails, and many more. The purpose of a framework is to provide a programmer with a set of reusable tools to speed up development. While some call Node.js a framework, it’s not accurate. Node.js runs JavaScript code on the server side using just-in-time compilation. Node.js is based on the V8 engine designed to execute code in Chrome. Node.js is a runtime environment, a software infrastructure that executes code and communicates with an operating system. Is Node.js a framework? - No, it’s a JavaScript runtime The interest in this technology peaked in 2017 and remains high. However, it wasn’t until recently that the wide adoption of server-side JavaScript with Node.js started. The technology was later adopted by a number of technology leaders, such as Uber, eBay, Walmart, and Netflix, to name a few. The latter also became one of the first companies to use Node.js for its mobile application backend. The company invested in a number of other technologies, such as Ruby on Rails framework, and provided hosting services to Twitter and LinkedIn. The technology was first introduced back in 2009 by Ryan Dahl at the annual European JSConf and was immediately recognized as “the most exciting single piece of software in the current JavaScript universe”.Īs an open-source project, Node.js was sponsored by Joyent, a cloud computing and hosting solutions provider. It’s used for server-side operations, bringing JavaScript programming to the backend to run applications on Linux, Windows, and OS X. Node.js is an open-source runtime environment, based on Chrome’s V8 JavaScript engine and written in JavaScript and C/C++. One of the tools that indicated this shift in web development was Node.js. JavaScript is also used for server-side programming. Traditionally used as a web frontend development tool, it has also become a major cross-platform mobile development tool as a basic technology for a large number of platforms, such as Apache Cordova/PhoneGap, React Native, NativeScript, and Appcelerator Titanium.īut the areas of application for JavaScript do not end here. What is Node.js used for? Reading time: 15 minutesĪs the most popular programming language, JavaScript is also one of the most universal software development technologies. Node.js vs Ruby on Rails vs Django vs Symfony: Node.js alternatives.Θ Immature tooling and dependency management.Θ Performance bottlenecks with heavy computation tasks.⊕ Large developer community and gentle learning curve.⊕ Rich ecosystem: Node.JS libraries and tools.⊕ Scalable technology for microservices.Is Node.js a framework? - No, it’s a JavaScript runtime.
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