Java backend, microservices, distributed systems, containerized programming, and more.
This article explains Spring's @Transactional default rollback behavior, why checked exceptions like IOException don't trigger a rollback, illustrates the resulting data inconsistency with a money‑transfer example, and shows how to fix the issue by explicitly configuring the rollbackFor attribute.
This guide lists essential IntelliJ IDEA plugins for Java/Spring developers, explains how to install and configure each one, highlights performance considerations, and shows how they can streamline navigation, code generation, debugging, theming, and AI‑assisted coding while keeping resource usage in check.
This article presents a comprehensive, step‑by‑step guide to optimizing Java‑based API interfaces, covering batch processing, asynchronous execution, caching, pre‑processing, pooling, transaction handling, pagination, SQL tuning, lock granularity, and code restructuring, with practical code examples and diagrams.
A recent production incident revealed duplicate order IDs caused by a home‑grown Snowflake implementation that misused timestamps, IP‑based business IDs, and unconfigured worker/data‑center IDs, leading to collisions; the article analyzes the flaws, shares lessons, and recommends proven libraries and proper ID‑generation strategies.
This article reviews the most popular AI-powered code generation tools—including GitHub Copilot, Amazon CodeWhisperer, Tabnine, Tongyi Lingma, CodeGeeX, Bito, and Codeium—detailing their features, suitable scenarios, installation steps, advantages, cautions, and practical results, and provides comparison tables and recommended tool combinations for individual developers, domestic teams, and cloud projects.
This guide walks through setting up a three‑server environment (GitLab, Jenkins, test server), creating a GitLab project, configuring a Java Spring Boot application in IntelliJ, and using Jenkins with Maven, SSH Publisher, and custom pre/post steps to automatically build, package, and deploy a JAR file.
Spring Boot 4 launches alongside Spring Framework 7, Spring Data 2025.1 and Spring AI 1.1, introducing Jakarta EE 11, JDK 25, JSpecify null‑safety, build‑time optimizations with Project Leyden, a new declarative HTTP client, Jackson 3 support, native API versioning, built‑in resilience, OpenTelemetry integration, and a dual‑track AI strategy.
This guide shows how to view the Maven dependency tree in IntelliJ, use the mvn dependency:tree command, leverage the Maven Helper plugin, identify conflicting JARs, and resolve them with exclusion rules or dependencyManagement to ensure the correct versions are used.
Learn how Maven‑mvnd accelerates Java project builds by keeping a persistent daemon, reducing JVM startup overhead, lowering CPU and memory usage, and offering seamless migration from Maven, with detailed installation, configuration, usage steps, and a speed comparison against traditional Maven builds.
This article explains why using IN and NOT IN in SQL queries often leads to poor performance and incorrect results, demonstrates common pitfalls with examples—including NULL handling—and shows safer alternatives such as EXISTS, NOT EXISTS, and JOINs.
