What are the advantages of node.js? An introduction to the advantages and disadvantages of node

This article introduces the four major advantages of node.js and the four reasons for choosing node.js. They are all the benefits of node.js. Of course, there are advantages and disadvantages. , the article also introduces five shortcomings of node.js. Let’s take a look together

First of all, let’s introduce the advantages of node.js:

From my personal experience, Node has 4 major advantages. :

1. Nodejs is based on Javascript language, so there is no need to learn an unfamiliar language separately, thus lowering the learning threshold. At the same time, the Javascript language is crucial in Web front-end development, especially HTML5 applications must use it. Therefore, the unified language of the front and backend can not only realize the full-stack development of programmers, but also unify public class libraries and standardize codes. Based on this alone, Nodejs has won the favor of the market.

2. Nodejs did not re-develop the runtime environment, but chose the currently fastest browser kernel V8 as the execution engine to ensure the performance and stability of Nodejs.

4. 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. . (If you want to know more, go to the PHP Chinese website node.js video tutorial column, you can also learn by watching the video)

Of course, the advantages of node.js are definitely more than this, we are here I won’t go into further details. If you have better advantages, you can leave a message below

The reasons for choosing Nodejs can be summarized into the following 4 points:

Dynamic language: Development efficiency is very high and has the ability to build complex systems such as ql.io.

Performance and I/O load: Nodejs solves IO-intensive problems very well through asynchronous IO.

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

Operation: Implemented the Nodejs monitoring system for the memory stack.

We have said so many advantages of node.js, but does it have any disadvantages?

The answer is yes, otherwise why wouldn’t it become popular?

Let’s take a look at the shortcomings of node.js:

The shortcomings of node.js are the areas where nodejs is not suitable

Every language Each platform or platform is not good at areas. For Nodejs, the area it is least good at is the programming operations of CPU and memory.

1. In computing-intensive applications, if Javascript and C compete for computing performance, it is probably impossible to win.

2. Memory control, it is also very difficult to define complex data types in Javascript and Java. Because Javascript's object-oriented approach is based on JSON, while Java uses memory structures directly. Therefore, Javascript has lost by controlling memory through the process of JSON serialization and deserialization.

3. For large memory applications, due to memory design limitations of the V8 engine, the maximum heap in a 32-bit environment is 1G, and the maximum heap in a 64-bit environment is less than 2G. If you want to read 10G data at a time, It is also not possible for Nodejs.

4. Static server. Although Nodejs has the advantage of IO-intensive applications, there is still a big gap with Nginx in handling static resources.

5. For applications that do not require asynchronous use: such as system management, customized scripts, etc., Python is more convenient. The asynchronous calls of Nodejs may bring some trouble to programming.

The above is the introduction to the advantages and disadvantages of node.js in this article (if you want to learn more, go to the PHP Chinese website, there is a column about node.js Chinese Reference Manual), If you have any questions, you can leave a message below.

The above is the detailed content of What are the advantages of node.js? An introduction to the advantages and disadvantages of node. For more information, please follow other related articles on the PHP Chinese website!