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.
This article explains how to use Spring Boot's event mechanism—including @EventListener, @TransactionalEventListener, and asynchronous processing—by walking through practical code examples, configuration tips, and common pitfalls to help developers build loosely‑coupled, reliable services.
This article explains how to fine‑tune JSON responses in Spring Boot 3 using Jackson annotations such as @JsonProperty, @JsonFormat, @JsonView, and Mix‑ins, covering field hiding, renaming, null handling, date/number formatting, view‑based serialization, and custom ObjectMapper configuration with code examples.
This article presents over sixteen practical refactoring methods for Java, demonstrating how to replace tangled if‑else statements with clearer constructs such as early returns, ternary operators, switch‑case, guard clauses, optional handling, enums, reflection, strategy, and table‑driven approaches, each illustrated with concise code examples.
This article explores Java’s advanced lock mechanisms—ReentrantLock, ReentrantReadWriteLock, StampedLock, and Semaphore—detailing their core features, practical code examples, and ideal usage scenarios, helping developers decide which synchronization tool best fits their performance and concurrency requirements.
This article introduces the most practical Spring Data JPA methods, explains when and why to use each one, and provides real‑world code examples ranging from basic CRUD operations to custom @Query, @Modifying, QBE, and dynamic specifications for advanced backend development.
This article explains the Hibernate @Formula annotation, covering its purpose, basic and advanced usage with code examples, performance considerations, and best practices, while also announcing a Spring Boot 3 PDF collection of 181 practical cases with free ongoing updates.
This article presents twelve concrete guidelines and code examples for configuring Spring Boot 3 logging—covering readability, level selection, structured JSON output, asynchronous handling, sensitive data masking, and log rotation—to help developers build observable, maintainable, and high‑performance backend services.
This article presents a comprehensive guide to essential system‑design concepts—including client‑server architecture, IP addressing, DNS, proxies, latency, HTTP/HTTPS, APIs, REST, GraphQL, databases, scaling, caching, microservices, message queues, rate limiting, API gateways, and more—illustrated with Spring Boot 3 examples and diagrams.
This article dives into advanced Jackson capabilities for Spring Boot 3, covering file, stream, byte array, URL, typed Map, JsonNode, ObjectNode, and streaming JsonParser techniques, each illustrated with concise code examples to help developers build robust, flexible JSON handling in backend services.
This article explains how to use Spring Boot's @Sql annotation for integration testing, covering script execution, statement injection, execution phases, grouping, merge modes, and configuration with clear code examples and screenshots.
