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 >>

Yuncheng LiaoTechnology Center, Surfin Group AbstractThe emergence of large language models (LLMs) such as GPT, Llama, and BERT has led to the incredible accumulation of knowledge and natural language abilities. Practitioners from various fields are exploring the practical applications and scenarios ... 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 >>

Abstract: Unit testing is the basis of software testing. This article discusses in detail the two steps of unit testing, manual static inspection and dynamic execution, the work items to be executed and related strategies and methods.How to conduct unit testing with white box testing method, keyword ... More >>

1. ArchitectureiOS: cocoa Touch layer: including Foundation Framework, UIkit Framework, Address Book UI Framework Media layer: including image, audio, and video technologies Core service layer: For example, CoreFoundationframework is an interface set based on C language, providing Basic data ma ... More >>

IntroductionI believe there are a lot of people like me are halfway front-end development, when it is to find a training institution to train a four or five months out to find a job, so the basic part of the front-end Js mastery is very weak, although the work is found, but in the daily work of many ... More >>