Focused on Java backend technologies, sharing fundamentals, multithreading, JVM, the Spring ecosystem, microservices, distributed systems, high concurrency, source‑code analysis, and practical experience. Continuously delivers high‑quality original content, interview guides, and learning roadmaps to help Java developers progress from beginner to advanced, enhancing technical skills and core competitiveness.
This article explains why Redis is essential for Spring Boot projects, walks through adding dependencies, configuring connection and serialization, demonstrates CRUD operations for all Redis data types, shows @Cacheable usage, and lists common pitfalls with practical solutions.
This article explains why HikariCP is the default Spring Boot connection pool, details the required dependencies, walks through essential configuration parameters, shows how to use HikariTemplate, monitor pool metrics, avoid common pitfalls, and compares HikariCP with other popular pools.
This guide explains how to configure multiple data sources in SpringBoot to achieve basic read‑write separation, covering applicable scenarios, step‑by‑step setup of master and slave DataSources, SqlSessionFactory and SqlSessionTemplate beans, package‑based routing, transaction considerations, common pitfalls, and best‑practice recommendations.
This tutorial walks through integrating SpringBoot with JPA (Hibernate) from adding dependencies to configuring the datasource, defining entities, using JpaRepository, building service and controller layers, applying method‑naming rules, writing custom queries, comparing JPA with MyBatis and JdbcTemplate, and highlighting key pitfalls for rapid, low‑boilerplate data‑access development.
This article explains how to integrate SpringBoot with JdbcTemplate to quickly build a lightweight data access layer, covering suitable scenarios, Maven dependencies, configuration, entity definition, CRUD operations, batch processing, service encapsulation, controller endpoints, transaction handling, and guidance on when to choose JdbcTemplate over MyBatis.
This article walks through a full SpringBoot‑MyBatis integration, covering Maven dependencies, application.yml configuration, database schema, entity definition, mapper XML, service layer with transactions and pagination, REST controller endpoints, key features, and common pitfalls.
This article explains how SpringBoot’s DispatcherServlet acts as the central dispatcher of the Web module, detailing its role and the surrounding core components—HandlerMapping, HandlerAdapter, HandlerExceptionResolver, ViewResolver, and HttpMessageConverter—along with practical code examples and common pitfalls.
This guide explains how backend developers can combine Postman for fast manual debugging with JUnit 5 automated tests to ensure API correctness, handle token authentication, run batch requests, and avoid common pitfalls in SpringBoot projects.
This guide shows how to configure Spring Boot to automatically wrap all controller responses in a unified Result object, apply global JSON formatting for dates, Long values, null handling, and custom enum serialization using HttpMessageConverter, ResponseBodyAdvice, and a global exception handler.
This article introduces Aspect‑Oriented Programming in Spring Boot, explains core AOP concepts and terminology, and provides step‑by‑step code examples for creating logging, transaction management, and permission‑validation aspects using annotations such as @Aspect, @Around, @Before, and @Transactional.
