Is nodejs common now?

With the popularity of Internet technology, more and more developers and companies are beginning to pay attention to Node.js. Node.js is a JavaScript running environment based on the Chrome V8 engine. It can run JavaScript scripts on the server side, that is, it can be used to develop server-side applications. Compared with traditional server development languages, such as Java, PHP, etc., Node.js has the advantages of being lightweight, efficient, and easy to expand. It has risen rapidly in recent years and has become a very popular development technology.

1. Advantages of Node.js

1. Lightweight and fast: Node.js adopts event-driven and non-blocking I/O models, so it can handle large concurrency and high load request.
2. Efficient and resource-saving: Node.js adopts a single-threaded model, which eliminates the need to allocate a new thread for each request, saving system resources and avoiding problems such as thread deadlock.
3. Easy to use and extend: Because Node.js is developed using the JavaScript language, front-end developers can quickly master the basics of Node.js, and Node.js's package manager npm also provides a wealth of third-party package for easy expansion.

2. Application scenarios

1. Web applications: Node.js can be used to build lightweight and efficient web applications, such as social media websites and real-time chats rooms, interactive websites, etc.
2. Instant messaging applications: Node.js has great advantages in instant messaging applications, such as developing real-time chat applications, push messages, etc.
3. Backend applications: Node.js can be used to build efficient backend applications, such as API services, real-time data synchronization, file transfer, etc.
4. Server-side applications: Node.js can be used to build server-side applications, such as web servers, DNS servers, mail servers, etc.

3. Node.js development tools and frameworks

Node.js has many mature development tools and frameworks. Here are some commonly used tools and frameworks:

1. Express: One of the most popular web frameworks for Node.js, which can quickly create web applications.
2. Koa: Similar to Express, Koa is more lightweight and based on ES6 standard asynchronous programming, which can quickly build web applications.
3. Hapi: An enterprise-level Node.js web framework that provides a rich set of plug-ins and functions suitable for building large and complex web applications.
4. Socket.io: A real-time communication library that can be used to build real-time chat, games and other applications.
5. Mongoose: An excellent MongoDB ORM tool that can easily operate MongoDB database.

4. The future development of Node.js

As Node.js continues to grow, it has gradually attracted more and more developers to recommend it, and the community has become more and more active. In the future, Node.js will have wider application scenarios and more practices, and the Node.js ecosystem will become richer and more complete. Moreover, due to the efficiency and flexibility of Node.js, it will become the mainstream technology for server-side development in the future.

In short, with the rapid development of Node.js, as a server-side JavaScript technology, it has become an indispensable part of the Internet development field. Whether it is in web development, instant messaging, back-end applications or server development, Node.js has performed very well. I believe its future will be brighter. Let's wait and see!

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