Recently, a programmer posted an article on Weibo claiming that he was working for an overseas company while accessing the international internet. He was subsequently accused by the Shuangqiao Public Security Sub-bureau in Chengde, Hebei of "illegally establishing and using non-official channels for international networking" and received an administrative penalty of a fine of RMB 200 and the confiscation of "illegal gains" totaling RMB 1.05 million.This is the most severe punishment reported so far for the offense of "illegally establishing and using non-official channels for international net...

China witnessed the recent launch of a new IDE called CEC-IDE, which boldly claims to be the first IDE independently developed by Chinese developers. Initially, this release was anticipated to be a moment of pride for the country, as it marked the availability of a homegrown IDE. However, the situation quickly took an embarrassing turn, and the entire narrative soon became a subject of ridicule.It has come to light that the so-called independently developed IDE, CEC-IDE, is actually built upon the renowned VSCode IDE. The developers merely made superficial changes to the software, such as modi...

Singleton pattern is the simplest design pattern in software design. It ensures that only one instance of an object exists globally, regardless of how many times the object is instantiated. Based on the characteristics of the singleton pattern, it can be applied to scenarios such as global unique configuration, database connection objects, file access objects, etc. In Go language, there are multiple ways to implement the singleton pattern. Today, let's learn together about some of these approaches.Eager InitializationImplementing the singleton pattern using eager initialization is very simple....

In Go language, select is a keyword used to listen to and perform IO operations related to channels.With the select statement, we can simultaneously listen to multiple channels and perform corresponding operations when any of the channels are ready.This article will summarize the common uses of the select statement and provide some considerations when using it.Basic syntaxThe basic syntax of the select statement is as follows:select {case <-channel1: // when channel1 has data to processcase data := <-channel2: // when channel2 has data to processdefault: // if no channel has dat...

Microsoft's social platform LinkedIn announced on Wednesday, August 9th, that it would cease its operations in China, ending its nearly decade-long presence in the Chinese market. This move signifies the departure of a major Western social media platform from China.Currently, when accessing LinkedIn's domain within China, users are redirected to a page that provides services for corporate clients. The mobile app for "LinkedIn Workplace" displays a message stating, "Unable to load data."As one of the few successful social media platforms operated by a U.S. tech company in China, LinkedIn, as th...

At the heart of every story lies a villain and a hero. In the never-ending story of certificate lifecycle management, there’s no bigger villain than manual effort. Destructive, irrepressible, and risk-laden, this villain causes nothing but mayhem and loss. Automation, the hero, is the complete opposite of manual effort. Proactive, solution-oriented, and breach-proof, this hero deserves recognition, allegiance, and attention, yet they get none of that from a majority of today’s organizations. It’s time for a script change. Here’s why you should automate your certifi...

Today, let's talk about the usage and applicable scenarios of errGroup, which is often used. Why is it useful? Generally, when we use goroutine, we cannot return a value. If you want to pass out the result of the goroutine execution, you usually have to use the channel. The errGroup package is suitable if you want to know when the goroutine you opened encounters an error during execution and stop working, and I need to know the error value.errGroup usageThe package needs to be downloaded and installed first. go get -u golang.org/x/syncAn example of using it would bepackage mainimport ( ...

Heuristic cacheHeuristic caching is the default behavior of browser caching (i.e., for responses without Cache-Control), which is not simply "not caching", but implicitly caching based on the so-called "heuristic cache". HTTP is designed to cache as much as possible, so even if Cache-Control is not specified, the response will be stored and reused if certain conditions are met. This is called heuristic caching.HTTP/1.1 200 OKContent-Type: text/htmlContent-Length: 1024Date: Tue, 22 Feb 2022 22:22:22 GMTLast-Modified: Tue, 22 Feb 2021 22:22:22 GMTCache durationThe formula for calculating the cac...