Focused on Java technologies: SSM, the Spring ecosystem, microservices, MySQL, MyCat, clustering, distributed systems, middleware, Linux, networking, multithreading; occasionally covers DevOps tools like Jenkins, Nexus, Docker, ELK; shares practical tech insights and is dedicated to full‑stack Java development.
This article explains what circular dependencies are in Spring, how the framework detects them using a three‑level cache during bean creation, and walks through a step‑by‑step example of resolving a setter‑injected circular reference between two beans.
This article explains why retrieving Spring beans from classes not managed by Spring can cause NullPointerExceptions and failed autowiring, demonstrates two code examples—using a utility class and @Autowired in a plain class—and recommends registering such classes as Spring components to ensure proper dependency management.
Learn step‑by‑step how to create a Spring Boot multi‑module Maven project, from designing the parent and child module structure, configuring pom.xml files, writing simple application and controller code, to building and running the modules with Maven commands.
This article walks through adding a creator‑province dropdown filter to a to‑do list page, updating both front‑end components and back‑end APIs, handling status count changes, implementing reset logic, and debugging a pagination bug caused by incorrect start‑row calculations.
This guide explains the WeChat team's risk‑control logic, the three‑level response model, and provides a complete self‑service unlocking workflow, high‑success material checklist, official contact channels, and post‑unlock protection strategies to resolve account restrictions within minutes.
This article explains Spring configuration files, comparing XML and Java (annotation‑based) approaches, details bean creation, scopes, initialization and destruction, and demonstrates advanced techniques such as conditional beans and profile‑specific configurations with clear code examples.
This article explains how Spring Cloud Ribbon provides client‑side load balancing, outlines its classification, core mechanisms, common algorithms, and shows step‑by‑step code to replace the default balancing rule in a Spring Boot microservice.
A comprehensive step‑by‑step tutorial shows how to integrate MyBatis‑Plus into a Spring Boot project, covering dependencies, configuration, entity annotations, CRUD operations, pagination, logical deletion, enum handling, automatic field filling, multi‑datasource support, and testing.
This guide explains why learning the classic Eureka service registry remains valuable, compares architectures with and without Eureka, and provides step‑by‑step code for both non‑clustered and clustered setups, including self‑protection mode, load‑balanced clients, and how to retrieve registration information via DiscoveryClient.
This guide explains what WeChat "zombie" contacts are, why third‑party cleaning tools are dangerous, and provides four official, zero‑risk methods—transfer verification, group‑broadcast screening, Moments AB testing, and group isolation—plus deletion limits, risk controls, and long‑term maintenance strategies.
