Node.js is a server technology used to build and run web applications, similar to what ASP.NET, Ruby on Rails or the Spring framework does. It uses JavaScript as the main development language, has a built-in lightweight web server, and a large number of plug-ins for Node Package Management (NPM). You can shape the web application according to your own needs, such as adding MVC features, Add Restful services, OAuth or SSL security and more.
Reuse of language
Technologies like ASP.NET or Spring require developers to learn a new server-side language, such as C#, VB.NET or Java. Node.js uses JavaScript on both the server and client sides, which means developers only need to use one language at each layer.
Easy transformation for developers
It is a fact that JavaScript is a well-known language among web developers. Most people know JavaScript or have used it to some extent. So, it is very simple for a web developer to transition from other technologies to Node.js.
Lightweight
Node.js uses an event-driven architecture, which means that everything done on it, every independent call and operation, is a series of asynchronous callbacks. This allows Node.js to run on a thread, which is different from other web technologies, which generate a new thread for each client request. This is the essence of non-blocking I/O.
Support object database
It is very common to use object databases like MongoDB in Node.js applications. MongoDB is different from traditional SQL databases in that it uses a document-based model rather than a relational model. table, but an object like JSON. This is very suitable for ORM lovers.
Widely supported by IDEs and code editors
JavaScript has been around for quite some time, so IDEs like Visual Studio and Eclipse all support JavaScript code hints and highlighting, and code editors like NotePad and Sublime Text also support these.
Host your service anywhere
Some web servers and cloud service providers support Node.js web applications. Let’s talk about a few here, including Google, Microsoft IIS, Heroku, Microsoft Azure, Amazon (AWS) and so on.
The above is my personal summary of why node.js is so popular. If there are any omissions, please correct me.
node.js is really a powerful tool for development~
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