Generally speaking, development engineers have defined microservice interfaces in the early stage of development, and test engineers and development engineers start their own development tasks almost simultaneously. However, this harmonious work scenario is soon destroyed by the spider web-like micr ... More >>

IntroductionThis article provides a comprehensive compilation of 16 essential coding practices that the author deems are indispensable for enhancing work efficiency 1. After modifying the code, remember to test it“Test the code after modification” is a basic requirement for every programmer. Don’t h ... More >>

After the table is indexed, sql can select the right index when the amount of data is small, but when the amount of data becomes large, it cannot select the correct index. We analyze the reasons for mysql’s wrong index selection from the following aspects. Impact the execution of sql cost analysis A ... More >>

About Online DDLDDL(Data Definition Language), that is, the data definition language, including new table, table add fields, change fields and other operations.Large table DDL at will execute dozens of minutes, even a few hours, such a long time to lock the table for the business is obviously unacce ... More >>

The CAP theorem is a common criterion used by engineers to measure the design of distributed systems. The CAP theorem holds that a network-based data sharing system can only satisfy at most two of the three elements of data consistency, availability, and partition tolerance; during the system design ... More >>

1. What is the Redis big key problem?The Redis big key problem refers to a situation where a key in Redis has a value that consumes a significant amount of memory, leading to performance degradation, insufficient memory, data imbalance, and delayed master-slave synchronization, among other issues.Wh ... More >>

1. forewordWhen we use Gradle to build tasks, we sometimes want to count the time consumption of each task, so as to find out the running time of each task and whether there is room for optimization. train of thought1.Custom Gradle plugins2.Use Listener to monitor3.Register Listener in custom Gradle ... More >>

Overview of mysql infrastructureMySQL can be divided into two parts: the server layer and the storage engine layer. The Server layer includes connectors, query caches, analyzers, optimizers, executors, etc., including most of MySQL’s core service functions, as well as all built-in functions (such as ... More >>

1.What is cross-site scripting (XSS)(1)conceptCross-site scripting (also known as XSS) is a web security vulnerability that allows an attacker to compromise the interactions that users have with a vulnerable application. It allows an attacker to circumvent the same origin policy, which is designed t ... More >>

What are WebSockets?The WebSocket protocol was born in 2008 and became an international standard in 2011. All browsers already support it. WebSockets are a bi-directional, full duplex communications protocol initiated over HTTP. They are commonly used in modern web applications for streaming data an ... More >>