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88 recent articles

Java Companion

Mar 22, 2026 · Backend Development

How to Seamlessly Integrate Tess4j OCR into a SpringBoot Application

This tutorial walks through the fundamentals of OCR, explains how to download the required Tesseract traineddata files, shows how to add Tess4j as a Maven dependency, configure SpringBoot with custom properties, and provides complete Java test code for Chinese, English, and mixed‑language image recognition, highlighting performance considerations and file‑naming requirements.

Image RecognitionJavaOCR

0 likes · 9 min read

How to Seamlessly Integrate Tess4j OCR into a SpringBoot Application

Java Companion

Mar 20, 2026 · Cloud Native

Why Does Traffic Still Hit a Shut‑Down Instance After Marking It Offline in Nacos?

The article explains why a service instance marked offline in Nacos can still receive traffic due to client‑side cache delays and UDP push loss, and it presents step‑by‑step loss‑less shutdown solutions using Kubernetes PreStop hooks, client retries, and Spring Boot graceful shutdown.

Graceful ShutdownKubernetesLoad Balancer

0 likes · 8 min read

Why Does Traffic Still Hit a Shut‑Down Instance After Marking It Offline in Nacos?

Java Companion

Mar 17, 2026 · Backend Development

Three Hot‑Reload Methods for Spring Boot in IDEA – Why JRebel Is the Best

When Spring Boot projects grow, restart times can reach minutes, slowing development, so the article compares three hot‑reload approaches—spring‑boot‑devtools, IDEA’s built‑in HowSwap, and the JRebel plugin—detailing their setup, limitations, and why JRebel is the most effective.

Hot ReloadIntelliJ IDEAJRebel

0 likes · 5 min read

Three Hot‑Reload Methods for Spring Boot in IDEA – Why JRebel Is the Best

Java Companion

Mar 13, 2026 · Backend Development

Master Nginx Virtual Hosts: Domain, IP, and Port Configurations Explained

This step‑by‑step guide shows how to configure Nginx virtual hosts using domain names, IP addresses, and ports, covering directory preparation, nginx.conf edits, syntax testing, service reload, and client verification for each method.

Domain ConfigurationIP ConfigurationNginx

0 likes · 10 min read

Master Nginx Virtual Hosts: Domain, IP, and Port Configurations Explained

Java Companion

Mar 12, 2026 · Artificial Intelligence

AgentScope Java: Alibaba’s Enterprise‑Grade AI Agent Framework for Java

AgentScope Java 1.0, open‑sourced by Alibaba, provides a production‑ready AI agent framework built for Java ecosystems, addressing stack fragmentation, security, operations, and multi‑agent collaboration through ReAct reasoning, real‑time interruption, sandboxing, RocketMQ‑based A2A communication, and visual debugging, with detailed integration guides and comparison to LangChain4j and Spring AI.

AI agentsAgentScope JavaEnterprise AI

0 likes · 14 min read

AgentScope Java: Alibaba’s Enterprise‑Grade AI Agent Framework for Java

Java Companion

Mar 6, 2026 · Backend Development

Merge vs Rebase: The Ultimate Guide to Git Merge Strategies

This article walks through a realistic scenario where two developers work on parallel feature branches, compares the outcomes of using git merge versus git rebase—including fast‑forward and non‑fast‑forward merges, conflict resolution steps, and the impact on commit history—so you can choose the right strategy for your workflow.

GitVersion Controlcommit history

0 likes · 7 min read

Merge vs Rebase: The Ultimate Guide to Git Merge Strategies

Java Companion

Mar 5, 2026 · Backend Development

Boost Your Spring Boot Performance 25× with Dragonfly, a High‑Speed Redis Alternative

DragonflyDB, a Redis‑compatible high‑performance KV store, delivers up to 25× the throughput of Redis while using 15‑30% less memory, and can be integrated into Spring Boot projects with zero code changes, offering faster latency, better resource utilization, and seamless migration.

Backend IntegrationDragonflyDBPerformance

0 likes · 12 min read

Boost Your Spring Boot Performance 25× with Dragonfly, a High‑Speed Redis Alternative

Java Companion

Mar 3, 2026 · Backend Development

Simplify MyBatis IN Clauses: Custom Extension Replaces foreach Template and Doubles SQL Writing Efficiency

The article analyzes the cumbersome MyBatis IN‑statement foreach template, explores three implementation paths, and presents a custom LanguageDriver that lets developers write simple "in #{param}" syntax, cutting XML boilerplate in half while generating correct SQL at runtime.

IN clauseJavaLanguageDriver

0 likes · 13 min read

Simplify MyBatis IN Clauses: Custom Extension Replaces foreach Template and Doubles SQL Writing Efficiency

Java Companion

Feb 24, 2026 · Backend Development

Spring Boot Online Dependency Vulnerability Scanner: One‑Click Detection of Potential Security Issues

This guide presents a lightweight Spring Boot dependency vulnerability scanner that automatically collects all project JARs, matches them against a CVE database, visualizes risk levels, provides detailed remediation steps and can be integrated into local development, emergency response, and CI/CD pipelines.

CI/CDCVEDependency Scanning

0 likes · 20 min read

Spring Boot Online Dependency Vulnerability Scanner: One‑Click Detection of Potential Security Issues

Java Companion

Feb 22, 2026 · Backend Development

Why Most Backend Architecture Patterns Are Over‑engineered

A recent code review reveals a colleague using strategy, factory, and abstract‑factory patterns to build a payment system that only needs two methods, exposing how 90 % of classic backend architecture patterns become unnecessary over‑design in modern microservice and cloud‑native environments, and offering practical guidelines for when such complexity truly adds value.

ArchitectureMicroservicesSpring Boot

0 likes · 13 min read

Why Most Backend Architecture Patterns Are Over‑engineered