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 guide explains why random UUIDs are inefficient as primary keys, introduces the TSID library that creates 64‑bit time‑ordered identifiers, and provides step‑by‑step Maven setup, API usage, JPA integration, and testing examples for Spring Boot 3.5.0.
This guide explains why @Scheduled jobs run on every Spring Boot instance in a cluster, and presents three practical solutions—Spring Integration's Redis lock, Redisson, and ShedLock—complete with Maven dependencies, configuration snippets, code examples, and runtime screenshots to guarantee that only one node executes the scheduled task at a time.
This article compares REST and GraphQL APIs for Spring Boot, explains their definitions, core differences, implementation steps with code samples, and provides clear criteria for selecting the right approach based on use‑case, performance, caching, and security considerations.
This article explains how to build short‑lived microservices using Spring Cloud Task on Spring Boot 3.5.0, covering environment setup, Maven dependencies, quick start code, configuration files, first task implementation, advanced options like custom table prefixes, external and parent task IDs, and task execution listeners with full code examples and screenshots.
This article presents a comprehensive guide to advanced MySQL techniques, covering CTEs, window functions, and query optimization strategies, complete with step‑by‑step code examples, performance tips, and practical demonstrations such as ranking employees and creating materialized views.
This tutorial walks through Jackson usage in Spring Boot 3, covering annotations for ignoring fields, renaming properties, custom serialization/deserialization, constructor handling, property visibility, date formatting, efficient JSON read/write, and enum handling with clear code samples and output screenshots.
This article explains Java's ReadWriteLock and the newer StampedLock, compares their performance, shows practical code examples for read, write, optimistic reads, and lock conversion, and highlights important limitations such as lack of reentrancy and Condition support.
This guide explains why Java developers often need to return multiple values, introduces the javatuples library as a lightweight solution, and walks through adding the Maven dependency, using core tuple classes, creating tuples via factories or constructors, accessing and modifying elements, and converting tuples to collections or arrays.
This article explains how to replace annotation‑based controllers with Spring Boot 3 functional routing, covering both servlet‑blocking and reactive WebFlux implementations, complete with code examples for handlers, routers, parameter validation, nested routes, filters, and resource redirects.
This article walks you through creating a GraphQL API in Spring Boot 3 using the GraphQL SPQR library, covering environment setup, model and service definitions, resolver implementation, controller configuration, and optional starter usage with full code examples.
