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I. Preface The last one deployed the most basic helloworld application, created two containers and a network, and it worked. If the app continues to introduce services such as mysql, redis, job, and so on, the amount of work it takes to publish at one time is conceivable, and Docker Compose is needed. Docker Compose is a tool for defining an ...

1, users Linux is a multi-user, multi task operating system Multiple users: multiple users log in at the same time Multitask: each user can perform multiple tasks User: Management of Linux system Users are generally divided into user name and user ID (UID) The user name is convenient for the administrator to use, and the user ID is the o ...

I. Introduction Because some servers in the service are abroad, the network is very unstable, and the http request is very volatile. So we hope to switch to other servers to send http requests through http proxy when the network slows down. What if the definition slows down? If the last N http requests are executed and the execution time exceed ...

python data analysis personal study notes-directory index Chapter 9 - Random Forest Project Actual Warfare - Temperature Prediction (2/2) Chapter 8 has explained the basic principles of random forests. From a practical point of view, this chapter will complete the task of temperature prediction with Python toolkit, which involves several mod ...

The previous article explained the implementation of MQTT protocol in JS by interacting with Unity3D, which is rather rough because it is not particularly proficient with JS.In this article, Unity3D is introduced to implement MQTT protocol communication, and the process is explained in detail.MQTT is an open source communication method of IBM ...

TFTP is a file transfer protocol similar to FTP, but it does not require user authentication and cannot list directories. The TFTP server always listens for requests from PXE clients on the network. When it detects that PXE client requests PXE service in the network, it will provide network data package containing boot ...

Common replication sets The common architecture of online environment is replica set, which can be understood as one master and many slaves. Below: 1 master and 2 slave Below: one master one slave one arbitration Server information: Three machines are configured with 2-core 16G memory storage disk 100G "host" : "10.1.1.159:27020""host" : "1 ...

Because of the mobile terminal's network speed and other reasons, when we browse articles with large pictures, there is an unfriendly experience. Lazy loading of pictures can make up for this problem. For the consideration of mobile terminal lightweight, this case uses the smaller zepto.picLazyLoad.min.js instead of jquery, and the plug-in can ...

Last reply: Students who didn't look back Here! // utils/async.js function wxPromisify(fn) { return async function(args) { return new Promise((resolve, reject) => { fn({ ...(args || {}), success: res => resolve(res), fail: err => reject(err) }); ...

1, function The function in Python is a code segment for realizing a certain function, which can be reused. That is, don't build the wheel again. Use the function when you meet the scene, that is, functional programming Next, I define a my func, pass in a Hello World, and print a Hello World def my_func(message): print('Got a message: {}'.f ...