Full-stack Java development with Vue 2/3 front-end suite; hands-on examples and source code analysis for Spring, Spring Boot 2/3, and Spring Cloud.
The article explains why accepting request data as a Map in Spring Boot controllers harms readability, tool support, and validation, and demonstrates how replacing Map with a typed DTO improves code clarity, automatic validation, and API documentation.
This article walks through building a production‑grade webhook system with Spring Boot 3.5, covering webhook fundamentals, a decoupled event‑driven architecture, database schema, entity and repository definitions, a dispatcher service with HMAC signing, exponential‑backoff retry, asynchronous execution, and dead‑letter handling.
This article walks through eight essential design patterns—Factory Method, Prototype, Adapter, Decorator, Observer, Strategy, Template Method, and Chain of Responsibility—showing concrete Spring Boot 3.5.0 code examples, explaining the problems each pattern solves, and highlighting their practical advantages for clean, extensible backend development.
This article compares four API‑gateway solutions—Spring Cloud Gateway, NGINX, Envoy, and Kong—detailing their core strengths, drawbacks, suitable scenarios, configuration snippets, and practical selection rules to help architects pick the right gateway for microservice systems.
This article explains why a common API prefix (e.g., /api/v1) is useful in microservice or front‑back separation projects and demonstrates seven practical techniques—custom DispatcherServlet registration, YAML configuration, SpEL‑based @RequestMapping, custom composed annotation, WebMvcConfigurer addPathPrefix, internal forwarding, Spring Cloud Gateway ProxyExchange, and Nginx reverse proxy—using Spring Boot 3.5.0 examples and code snippets.
The article analyzes Spring Data JPA's Page and Slice pagination options, explains the hidden COUNT(*) overhead of Page, demonstrates both approaches with code examples, compares performance and UX impacts, and provides guidance on when to choose Slice for large‑scale or infinite‑scroll scenarios.
CodeGraph is an open‑source AI‑powered code‑graph tool that builds a local SQLite knowledge graph of all symbols, calls and dependencies across more than 20 languages, enabling agents to retrieve complete call chains and impact analysis with a single query, dramatically cutting traversal overhead for large projects.
This article explains how to integrate Claude Code’s auto‑memory mechanism into Spring AI by using AutoMemoryTools and AutoMemoryToolsAdvisor, compares three integration options, shows the request workflow, memory file formats, and provides concrete code snippets and consolidation strategies for persistent, typed long‑term memory.
This article demonstrates how to recreate Spring's @Lookup method injection by writing a custom BeanFactoryPostProcessor and CGLIB proxy, enabling singleton beans to dynamically obtain prototype or named beans at runtime, with a complete payment‑service example and full source code.
This article explains why @Value, @ConfigurationProperties, and Environment cannot be used directly in BeanFactoryPostProcessor, and demonstrates two practical techniques—using Environment#getProperty and Binder with @ConfigurationProperties—to inject configuration properties without pain in early Spring Boot initialization.
