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This article mainly explains "is nodejs a server". The explanation in the article is simple and clear, easy to learn and understand. Please follow the editor's train of thought to study and learn "is nodejs a server?"

Nodejs is not a server, but a JavaScript running environment based on the Chrome V8 engine; nodejs uses an event-driven, non-blocking Imax O model that allows JavaScript to run on the server-side development platform.

This article operating environment: Windows7 system, nodejs10.16.2 version, DELL G3 computer

Is nodejs a server?

Nodejs is not a server.

Node.js is a JavaScript runtime environment based on the Chrome V8 engine. Node.js uses an event-driven, non-blocking Istroke O model to make it lightweight and efficient. Node.js 's package manager, npm, is the largest open source ecosystem in the world.

Node.js was released in May 2009 and developed by Ryan Dahl. It is a JavaScript runtime environment based on Chrome V8 engine. It uses an event-driven, non-blocking I-peg O model to let JavaScript run on the server-side development platform. It makes JavaScript a scripting language on a par with PHP, Python, Perl, Ruby and other server-side languages.

Node.js optimizes some special use cases and provides alternative API to make V8 run better in non-browser environment. V8 engine executes Javascript very fast and has very good performance. The platform based on Chrome JavaScript runtime is used to build web applications with fast response and easy to expand.

Main function

The V8 engine itself uses some of the latest compilation techniques. This greatly improves the speed of code written in scripting languages such as Javascript and saves development costs. Demanding performance is a key factor in Node. Javascript is an event-driven language. Node takes advantage of this advantage to write a server with high scalability. Node uses an architecture called event Loop (event loop), which makes it easy and secure to write highly scalable servers. There are a variety of techniques for improving server performance. Node chose an architecture that not only improves performance but also reduces development complexity. This is a very important feature. Concurrent programming is often complex and landmine-ridden. Node bypasses these, but still provides good performance.

Node uses a series of "non-blocking" libraries to support event loops. In essence, it is to provide interfaces for resources such as file systems and databases. When sending a request to the file system, there is no need to wait for the hard disk (addressing and retrieving files), and the non-blocking interface notifies the Node when the hard disk is ready. The model simplifies the access to slow resources in an extensible way, which is intuitive and easy to understand. Especially for users who are familiar with onmouseover, onclick and other DOM events, there is a sense of deja vu.

While letting Javascript run on the server side is not unique to Node, it is one of its powerful features. Admittedly, the browser environment limits our freedom to choose a programming language. The desire to share code between any server and increasingly complex browser client applications can only be achieved through Javascript. Although there are other platforms that support Javascript running on the server side, Node has developed rapidly and become a de facto platform because of the above features.

Within a short time of launching Node, the community has contributed a large number of extension libraries (modules). Many of them are drivers that connect to databases or other software, but many of them are very useful software based on their strength.

Finally, I have to mention the Node community. Although the Node project is still very young, it is rare to see a community so enthusiastic about a project. Whether novice or expert, everyone revolves around the project, using and contributing their abilities to create a paradise to explore, support, share, and listen to advice.

Thank you for your reading, the above is the content of "is nodejs a server?" after the study of this article, I believe you have a deeper understanding of the problem that nodejs is a server, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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