What are the reasons for using nodejs

Reasons for using nodejs: 1. Node.js uses JavaScript on both the server and client sides, which means developers only need to use one language at each layer; 2. The development efficiency of node is very High, and has the ability to build complex systems; 3. It can solve IO-intensive problems very well; 4. The learning cost is low, etc.

The operating environment of this tutorial: windows7 system, nodejs version 12.19.0, DELL G3 computer.

Node.js is a JavaScript running environment based on the Chrome V8 engine. It is a development platform that allows JavaScript to run on the server side. It makes JavaScript a script on an equal footing with server-side languages ​​such as PHP, Python, Perl, and Ruby. language.

Reasons for using Nodejs:

1. Use the same language for front-end/back-end development

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.

2. Dynamic language:

The development efficiency is very high, and it has the ability to build complex systems, such as ql.io.

3. Performance and I/O load:

Nodejs solves IO-intensive problems very well and implements it through asynchronous IO.

4. Connection memory overhead:

Each Node.js process can support more than 120,000 active connections, and each connection consumes approximately 2K of memory.

5. Low learning cost

Node is developed using js. You only need to learn simple APIs, and front-end developers can use it without any barriers, and the learning cost is very low.

Moreover, Node has an active community and a rich module pool, with many ready-made function implementations. In terms of frameworks, there are also mature basic frameworks such as koa and express and secondary packaging frameworks such as egg, which can be selected according to needs and are relatively easy to get started.

6. The Nodejs community is growing. Not only is the number of packages increasing rapidly, but the quality of the packages is also significantly better than that of other languages.

Many star-level packages are simple and smart, designed for developers' usage habits. The toolkits I use most, such as socket.io, moment.js, underscore.js, async.js, express.js, bower.js, grunt.js, forever.js..., are really changing my previous programming habits. .

7. Widely supported code hosting services

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.

For more node-related knowledge, please visit: nodejs tutorial! !

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