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java1234
java1234
Jan 23, 2026 · Fundamentals

Why Java 25 Is a Game‑Changer: Simpler Syntax, Faster Performance, Modern Features

Java 25, the newest LTS release, introduces a suite of language and runtime enhancements—including primitive‑type pattern matching, module‑wide imports, a lightweight main method, richer records, structured concurrency, scoped values, a vector API, and security updates—that together make Java code more concise, safer, and higher‑performing for both newcomers and seasoned developers.

JEPJava 25Record
0 likes · 11 min read
Why Java 25 Is a Game‑Changer: Simpler Syntax, Faster Performance, Modern Features
Architecture Digest
Architecture Digest
Jan 23, 2026 · Backend Development

Which Java Backend Framework Reigns Supreme? A Comparative Guide

This article evaluates major Java backend frameworks—Spring Boot, Quarkus, Micronaut, Vert.x, Helidon, Javalin, Dropwizard, Play Framework, Grails, Apache Wicket, Struts 2, JSF, and native Servlet+JSP—across performance, ecosystem maturity, learning curve, development efficiency, enterprise adoption, and innovation, then ranks them into five tiers from top to legacy.

Backend Developmentframework comparisonjava
0 likes · 9 min read
Which Java Backend Framework Reigns Supreme? A Comparative Guide
Java Web Project
Java Web Project
Jan 23, 2026 · Backend Development

Zero‑Downtime Spring Boot Deployment: Sharing a Port Between Two Instances

This article explains how to update a Spring Boot application without stopping the old process by letting a new instance start on the same port, detailing the Tomcat internals, the required ServletContainerInitializer callbacks, and providing a complete, step‑by‑step implementation with code samples and a live test.

PortSharingSpringBootTomcat
0 likes · 9 min read
Zero‑Downtime Spring Boot Deployment: Sharing a Port Between Two Instances
macrozheng
macrozheng
Jan 23, 2026 · Backend Development

Why Maven 4’s New Features Are a Game‑Changer for Java Projects

Maven 4 introduces a revamped POM model, native flattening, explicit artifact types, subproject support, a tree‑based lifecycle for parallel builds, and richer configuration options, making it a timely upgrade for modern Java development pipelines.

Build AutomationMavenMaven4
0 likes · 8 min read
Why Maven 4’s New Features Are a Game‑Changer for Java Projects
macrozheng
macrozheng
Jan 23, 2026 · Backend Development

Is Unified ORM Worth It? A Deep Dive into dbVisitor, Jimmer, and JdbcClient

The article critically examines the promise of a universal Java data‑access API like dbVisitor, contrasts it with specialized ORM solutions such as Jimmer, and highlights the lightweight JdbcClient approach, while considering the impact of AI‑generated SQL on traditional ORM relevance.

AIJdbcClientjava
0 likes · 8 min read
Is Unified ORM Worth It? A Deep Dive into dbVisitor, Jimmer, and JdbcClient
Java Companion
Java Companion
Jan 23, 2026 · Backend Development

Maven 4 Officially Announced: A 15‑Year Overhaul of Java’s Build Tool

Maven 4, now in its fifth release candidate, modernizes the 15‑year‑old Java build ecosystem with a new POM model, native Build/Consumer POM separation, explicit artifact types, subproject renaming, tree‑based lifecycle for parallel builds, and richer configuration options, while providing an official upgrade assistant.

Artifact TypesBuild ToolMaven
0 likes · 9 min read
Maven 4 Officially Announced: A 15‑Year Overhaul of Java’s Build Tool
macrozheng
macrozheng
Jan 22, 2026 · Backend Development

30 Must-Have IntelliJ IDEA Plugins to Supercharge Your Java Development

This guide presents a curated list of 30 essential IntelliJ IDEA plugins, covering installation tips, productivity boosters, code quality tools, UI enhancements, and handy shortcuts, each illustrated with screenshots and brief usage notes to help Java developers work more efficiently.

DevelopmentIDEAIntelliJ
0 likes · 7 min read
30 Must-Have IntelliJ IDEA Plugins to Supercharge Your Java Development
java1234
java1234
Jan 22, 2026 · Backend Development

From Heavyweights to Obscurities: A Critical Review of 13 Java Web Frameworks

The article evaluates 13 Java web frameworks across performance, ecosystem maturity, learning curve, development efficiency, enterprise adoption, and innovation, providing concrete metrics, strengths, suitable scenarios, and a tiered ranking from dominant to legacy options.

BackendMicronautQuarkus
0 likes · 9 min read
From Heavyweights to Obscurities: A Critical Review of 13 Java Web Frameworks
Sohu Tech Products
Sohu Tech Products
Jan 21, 2026 · Backend Development

How Maven 4’s New Build Model Can Transform Your Java Projects

This article explains Maven 4’s release‑candidate status, its separation of Build and Consumer POMs, the upgraded 4.1.0 model with simplified syntax, tree‑shaped lifecycle, concurrent builds, and developer‑friendly features like resume and delayed deployment, helping you decide when to adopt it.

Build ToolMavenMaven4
0 likes · 8 min read
How Maven 4’s New Build Model Can Transform Your Java Projects
Java Architect Handbook
Java Architect Handbook
Jan 21, 2026 · Backend Development

Why OpenFeign’s First Call Is Slow and How to Fix It

The article analyzes why the first OpenFeign call in micro‑service systems incurs seconds of latency, breaks down five root causes such as lazy client initialization, dynamic proxy creation, load‑balancer cold start, network handshake, and hidden dependencies, and provides concrete verification steps and four practical optimizations to move the cost to application start‑up.

Feign clientOpenFeignPerformance Optimization
0 likes · 15 min read
Why OpenFeign’s First Call Is Slow and How to Fix It
Su San Talks Tech
Su San Talks Tech
Jan 21, 2026 · Backend Development

How to Track Online Users in Real‑Time with Redis ZSET in SpringBoot

Learn a practical approach to count online users in real time by leveraging Redis sorted sets (zset) with SpringBoot, covering user identification via tokens or browser fingerprinting, key Redis commands (zadd, zrangeByScore, zremrangeByScore, zrem), and scheduled cleanup logic.

Online UsersRedisSpringBoot
0 likes · 7 min read
How to Track Online Users in Real‑Time with Redis ZSET in SpringBoot
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jan 21, 2026 · Backend Development

Generate Time‑Ordered IDs with TSID in Spring Boot 3

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.

Spring BootTSIDUUID alternative
0 likes · 10 min read
Generate Time‑Ordered IDs with TSID in Spring Boot 3
Selected Java Interview Questions
Selected Java Interview Questions
Jan 20, 2026 · Backend Development

How to Diagnose and Fix Maven Dependency Conflicts (NoSuchMethodError & ClassNotFoundException)

This guide explains why Maven dependency conflicts cause errors like NoSuchMethodError and ClassNotFoundException, shows step‑by‑step commands to inspect the dependency tree, and provides three practical ways—exclusions, forced versions, and dependencyManagement—to resolve and prevent such conflicts in Java projects.

BOMClassNotFoundExceptionDependency Conflict
0 likes · 7 min read
How to Diagnose and Fix Maven Dependency Conflicts (NoSuchMethodError & ClassNotFoundException)
Java Architect Handbook
Java Architect Handbook
Jan 20, 2026 · Backend Development

Why Replacing MyBatis with MyBatis-Plus Triggers LocalDateTime Errors—and How to Fix Them

The article details a step‑by‑step migration from MyBatis 3.5.0 to MyBatis‑Plus 3.1.1, explains why the conversion error for java.time.LocalDateTime appears after the switch, shows how to trace the root cause through stack traces, upgrades the mysql‑connector‑java to 5.1.37 (and later 5.1.42) to resolve the issue, and shares broader lessons about component upgrades and unexpected bugs.

DatabaseException HandlingJDBC
0 likes · 10 min read
Why Replacing MyBatis with MyBatis-Plus Triggers LocalDateTime Errors—and How to Fix Them
JakartaEE China Community
JakartaEE China Community
Jan 20, 2026 · Backend Development

How to Build AI‑Powered Java Apps with Helidon and LangChain4j

This article explains how Helidon 4.2 integrates the LangChain4j framework to simplify adding large‑language‑model capabilities, covering core features, Maven setup, configuration, component creation, dependency injection, annotations, custom tools, and sample applications such as a coffee‑shop assistant.

AI IntegrationHelidonLangChain4j
0 likes · 14 min read
How to Build AI‑Powered Java Apps with Helidon and LangChain4j
macrozheng
macrozheng
Jan 20, 2026 · Backend Development

How to Implement Multi‑Dimensional Bandwidth Throttling in Spring Boot 3

This guide explains how to build a complete multi‑dimensional network bandwidth throttling solution in Spring Boot 3 using a custom token‑bucket algorithm, HandlerInterceptor, HttpServletResponseWrapper, and RateLimitedOutputStream to precisely control download, video streaming, and API traffic.

BackendSpring BootToken Bucket
0 likes · 14 min read
How to Implement Multi‑Dimensional Bandwidth Throttling in Spring Boot 3
Java Backend Technology
Java Backend Technology
Jan 20, 2026 · Backend Development

What Maven 4 Brings: New POM Model, Flattened Consumer POMs, and Parallel Build Power

Maven 4 introduces a revamped POM model (4.1.0), separates build and consumer POMs to eliminate unnecessary metadata, adds explicit artifact types for classpath and module jars, renames modules to subprojects, adopts a tree‑based lifecycle for true parallel builds, and provides powerful configuration and upgrade tools, all aimed at modern Java projects.

Artifact TypesMavenPOM
0 likes · 8 min read
What Maven 4 Brings: New POM Model, Flattened Consumer POMs, and Parallel Build Power
java1234
java1234
Jan 20, 2026 · Databases

Understanding Redis Memory Eviction Strategies

Redis stores data in memory, so when usage reaches the maxmemory limit it triggers one of six eviction policies—noeviction, allkeys‑lru, volatile‑lru, allkeys‑random, volatile‑random, and volatile‑ttl—each suited to different scenarios, and can be set via redis.conf or CONFIG SET, as illustrated with a Java Jedis example.

JedisLRURedis
0 likes · 6 min read
Understanding Redis Memory Eviction Strategies
Alibaba Cloud Native
Alibaba Cloud Native
Jan 19, 2026 · Artificial Intelligence

Build a Multi‑Agent Boba Tea Shop with AgentScope Java: A Hands‑On Guide

This article introduces AgentScope Java 1.0.7, showcases its new features such as Ollama integration, Agent Skill support, and Nacos‑based A2A architecture, and walks through a complete boba‑tea‑shop example that demonstrates a Supervisor‑Worker multi‑agent system, ReActAgent configuration, dynamic MCP registration, MySQL session persistence, Mem0 long‑term memory, and AutoContextMemory compression, plus quick deployment options for local, Kubernetes, and Docker environments.

AgentScopeAutoContextMemoryMem0
0 likes · 12 min read
Build a Multi‑Agent Boba Tea Shop with AgentScope Java: A Hands‑On Guide
Architecture Digest
Architecture Digest
Jan 19, 2026 · Backend Development

What’s New in Maven 4? Exploring POM Model Upgrade, Flattening, and Parallel Builds

Maven 4, now in its fifth release candidate, introduces a new POM model version 4.1.0 with backward compatibility, separates build and consumer POMs to eliminate POM pollution, adds explicit artifact types for classpath and module jars, renames modules to subprojects, and brings a tree‑based lifecycle for true parallel builds, all supported by an official upgrade tool.

MavenMaven4POM
0 likes · 8 min read
What’s New in Maven 4? Exploring POM Model Upgrade, Flattening, and Parallel Builds
Selected Java Interview Questions
Selected Java Interview Questions
Jan 18, 2026 · Backend Development

How to Seamlessly Integrate Arthas into Spring Boot for Real‑Time Monitoring

This guide explains how to embed the Arthas online monitoring tool into a Spring Boot application using the Arthas Spring Boot Starter, configure telnet and HTTP ports, access the console via terminal or web, and extend debugging across multiple services with Arthas Tunnel while addressing security considerations.

ArthasDebuggingSpring Boot
0 likes · 12 min read
How to Seamlessly Integrate Arthas into Spring Boot for Real‑Time Monitoring
21CTO
21CTO
Jan 18, 2026 · Fundamentals

What Java Features Are Coming in 2026? A Look at Loom, Valhalla, Panama and More

Oracle’s 2026 Java roadmap highlights preview releases for value types, code reflection, AOT compilation, and structured concurrency, detailing progress on Project Loom, Valhalla, Panama, Amber, and Babylon, while noting timelines, goals, and the uncertainty of exact release dates.

AOT compilationJDKJava roadmap
0 likes · 6 min read
What Java Features Are Coming in 2026? A Look at Loom, Valhalla, Panama and More
SpringMeng
SpringMeng
Jan 18, 2026 · Backend Development

Maven 4 Arrives: A Complete Overhaul of Java Build Tools After 15 Years

Maven 4, now in its fifth release candidate, introduces a new POM model, consumer‑POM flattening, explicit artifact types, subproject renaming, a tree‑based lifecycle and richer configuration, all aimed at modernizing Java builds for modular, parallel, and cloud‑native environments.

Build ToolMavenMaven4
0 likes · 8 min read
Maven 4 Arrives: A Complete Overhaul of Java Build Tools After 15 Years
java1234
java1234
Jan 17, 2026 · Databases

Do Expired Redis Keys Get Deleted Instantly?

Redis uses both time‑based and lazy expiration, marking keys as expired at their TTL but only removing them on the next access or during periodic cleanup, so expired keys are not deleted the instant they expire.

JedisKey ExpirationLazy Deletion
0 likes · 5 min read
Do Expired Redis Keys Get Deleted Instantly?
Top Architect
Top Architect
Jan 17, 2026 · Backend Development

Why We Rebuilt a Java Scheduler and How the New Lightweight Framework Works

Faced with limitations of existing tools like Quartz, XXL-Job, and PowerJob, the author explains the motivation for creating a custom scheduling framework, describes its architecture—including gRPC communication, protobuf serialization, a self-implemented name server for load balancing, a simple message queue, and time-wheel scheduling—provides code examples, and shares diagrams of discovery and dispatch processes.

Distributed SystemsMessage queueOpenAPI
0 likes · 17 min read
Why We Rebuilt a Java Scheduler and How the New Lightweight Framework Works
IT Services Circle
IT Services Circle
Jan 17, 2026 · Backend Development

Kuaishou Campus Salary Insights & Java Backend Interview Guide

The article reveals that Kuaishou’s 2023 campus hires for backend and frontend roles typically earn 40‑50 wan yuan annually, discusses salary trends compared with previous years, and then provides a comprehensive Java backend interview guide covering JVM memory, garbage collectors, CMS GC process, concurrency primitives, and SQL join differences.

BackendConcurrencyInterview
0 likes · 15 min read
Kuaishou Campus Salary Insights & Java Backend Interview Guide
Java Companion
Java Companion
Jan 17, 2026 · Backend Development

6 Ways to Overcome the Limits of @Transactional in Spring

The article examines five scenarios where Spring's @Transactional annotation falls short—stock shortage, MQ messaging, batch processing, logging, and isolation/timeout settings—and demonstrates six practical techniques, including programmatic transactions, parameter tuning, transaction synchronizers, event listeners, manual transaction control, and propagation strategies, all backed by runnable demo code.

SpringBootevent-listenerjava
0 likes · 19 min read
6 Ways to Overcome the Limits of @Transactional in Spring
FunTester
FunTester
Jan 17, 2026 · Backend Development

How AI‑Assisted Refactoring Turned a Legacy Java Module into a Clean, Maintainable Service

A three‑year‑old Java module riddled with technical debt was systematically refactored using AI tools, following a four‑stage plan of analysis, problem identification, solution design, and incremental implementation, while establishing rigorous verification to ensure safety and quality.

AI-assisted refactoringDomain‑Driven DesignTechnical debt
0 likes · 15 min read
How AI‑Assisted Refactoring Turned a Legacy Java Module into a Clean, Maintainable Service
Code Ape Tech Column
Code Ape Tech Column
Jan 16, 2026 · Backend Development

Master JSONPath in Spring Boot: Simplify Complex JSON Extraction

JSONPath offers a concise, XPath‑like syntax for extracting data from complex JSON structures, and this guide shows how to integrate it into Spring Boot, compare FastJSON, Jackson, and Gson implementations, and provides practical code examples, advanced configurations, and selection advice for Java projects.

FastJSONGsonJackson
0 likes · 13 min read
Master JSONPath in Spring Boot: Simplify Complex JSON Extraction
SpringMeng
SpringMeng
Jan 16, 2026 · Backend Development

What Unexpected Pitfalls PageHelper Can Teach You After Years of Use

The article recounts a developer’s painful experience with PageHelper, detailing how duplicate registrations, truncated result sets, and password‑update errors stem from the plugin’s ThreadLocal pagination handling, and explains the underlying code paths and safe usage practices.

BackendMyBatisThreadLocal
0 likes · 13 min read
What Unexpected Pitfalls PageHelper Can Teach You After Years of Use
Tech Freedom Circle
Tech Freedom Circle
Jan 16, 2026 · Interview Experience

Crack JD Interview: Master Singleton, Factory, Strategy, Template & Observer Patterns in 20 Minutes

This article offers a systematic, high‑concurrency‑focused walkthrough of core Java design patterns—including Singleton, Factory, Strategy, Template Method, and Observer—complete with code examples, pros and cons, selection guidelines, and interview‑ready explanations to help candidates impress interviewers and secure offers.

Design PatternsFactoryObserver
0 likes · 36 min read
Crack JD Interview: Master Singleton, Factory, Strategy, Template & Observer Patterns in 20 Minutes
Selected Java Interview Questions
Selected Java Interview Questions
Jan 15, 2026 · Backend Development

How to Build a Lightweight, Annotation‑Driven Rate Limiter with Spring AOP and Guava

This article explains how to create a non‑intrusive, configurable rate‑limiting component for Spring services by combining Spring AOP, a custom @RateLimit annotation, and Google Guava's RateLimiter, covering token‑bucket fundamentals, API usage, implementation details, common AOP pitfalls, and migration to distributed limiting.

BackendGuava RateLimiterRate Limiting
0 likes · 12 min read
How to Build a Lightweight, Annotation‑Driven Rate Limiter with Spring AOP and Guava
JavaGuide
JavaGuide
Jan 15, 2026 · Interview Experience

Lost the Courage to Switch Jobs After Three Years in a State-Owned Enterprise?

The author explains why state-owned enterprises are not always stable, why their low‑tech projects hinder interview performance, and offers concrete steps—such as adding Redis caching, multithreading, and using the STAR method—to turn a modest Java background into compelling interview material.

BackendInterviewRedis
0 likes · 6 min read
Lost the Courage to Switch Jobs After Three Years in a State-Owned Enterprise?
Java Companion
Java Companion
Jan 15, 2026 · Backend Development

Implement Multi‑Dimensional Bandwidth Throttling in Spring Boot 3

This article presents a complete Spring Boot 3 solution for multi‑dimensional network bandwidth throttling using a manually implemented token‑bucket algorithm, custom HandlerInterceptor, HttpServletResponseWrapper, and RateLimitedOutputStream, with detailed code samples, configuration options, and performance tuning guidance.

Rate LimitingSpring BootToken Bucket
0 likes · 13 min read
Implement Multi‑Dimensional Bandwidth Throttling in Spring Boot 3
Java Backend Technology
Java Backend Technology
Jan 15, 2026 · Backend Development

Why Our Custom Snowflake ID Generator Failed and How to Build a Reliable One

A recent production incident revealed duplicate order IDs caused by a flawed custom Snowflake implementation; the article reviews the standard Snowflake structure, pinpoints design mistakes such as a 31‑bit timestamp, IP‑based business IDs, and zeroed worker IDs, and offers concrete recommendations and proven library alternatives for safe distributed ID generation.

ID generationjavasnowflake
0 likes · 7 min read
Why Our Custom Snowflake ID Generator Failed and How to Build a Reliable One
Coder Trainee
Coder Trainee
Jan 14, 2026 · Backend Development

How to Build a Simple ERP System in Just a Few Hours

This article walks through creating a lightweight material‑management ERP system—including login, dashboard, inventory, inbound and outbound modules—using Vue 3 for the front end and Spring Boot 3, Java 17, MySQL, and MyBatis‑Plus for the back end, highlighting the architecture and development efficiency tricks employed.

ERPMySQLMybatis-Plus
0 likes · 7 min read
How to Build a Simple ERP System in Just a Few Hours
Java Web Project
Java Web Project
Jan 14, 2026 · Backend Development

How to Turn Bloated Spring Controllers into Clean, Maintainable Code

The article analyzes why Spring MVC controllers often become massive with repetitive validation, logging, and business logic, demonstrates an ugly controller example, then shows step‑by‑step refactoring using @Valid, assertion utilities, and a global exception handler to dramatically reduce code size and improve readability.

@ValidController RefactoringException Handling
0 likes · 8 min read
How to Turn Bloated Spring Controllers into Clean, Maintainable Code
Top Architect
Top Architect
Jan 13, 2026 · Backend Development

Why Our Custom Snowflake ID Collided and How to Build a Reliable Generator

A severe production incident caused duplicate order IDs due to a flawed custom Snowflake implementation, prompting a detailed review of the standard algorithm, identification of critical design mistakes, and a set of practical recommendations for safe, scalable ID generation in distributed back‑end systems.

ID generationjavasnowflake
0 likes · 8 min read
Why Our Custom Snowflake ID Collided and How to Build a Reliable Generator
JavaGuide
JavaGuide
Jan 13, 2026 · Backend Development

Claude Code Generates Unexpected Bugs: 4 Real-World Spring Pitfalls and Fixes

During a Spring‑based interview platform project, the author discovered four typical bugs introduced by Claude Code—transactional self‑invocation loss, AI‑generated NullPointerExceptions, async task failures after entity deletion, and Redis Stream message buildup—and explains the root causes and concrete remediation steps.

AI Code GenerationAsyncBug debugging
0 likes · 11 min read
Claude Code Generates Unexpected Bugs: 4 Real-World Spring Pitfalls and Fixes
JakartaEE China Community
JakartaEE China Community
Jan 13, 2026 · Databases

Jakarta NoSQL 1.0: A New Standard for NoSQL Integration in the Java Ecosystem

Jakarta NoSQL 1.0 introduces a standardized, annotation‑driven API that lets Java developers map objects to document, key‑value, column‑family, or graph databases with type‑safe CRUD and fluent queries, while supporting CDI, annotation processors, and IDE integration for higher productivity and portability.

Annotation APIEclipse JNoSQLJakarta NoSQL
0 likes · 5 min read
Jakarta NoSQL 1.0: A New Standard for NoSQL Integration in the Java Ecosystem
java1234
java1234
Jan 13, 2026 · Backend Development

How to Write Elegant Spring Controllers and Slash Your Blood Pressure

The article shows how cluttered Spring controllers filled with try‑catch blocks, manual field checks, and business logic can be refactored into concise, readable code by using @Valid, assertion utilities, and a global exception handler, cutting the code size roughly in half.

@ValidControllerException Handling
0 likes · 9 min read
How to Write Elegant Spring Controllers and Slash Your Blood Pressure
SpringMeng
SpringMeng
Jan 13, 2026 · Backend Development

Top IDEA Plugins for 2026 to Supercharge Your Java Development

This article reviews essential IntelliJ IDEA plugins for Java/Spring developers, detailing core features, configuration tips, and trade‑offs for each plugin, and recommends a prioritized installation order to boost productivity while monitoring performance impact.

AI assistanceDebuggingIntelliJ IDEA
0 likes · 11 min read
Top IDEA Plugins for 2026 to Supercharge Your Java Development
Ray's Galactic Tech
Ray's Galactic Tech
Jan 12, 2026 · Backend Development

How to Achieve Exactly‑Once Processing with RabbitMQ: 6 Practical Strategies

This article presents a comprehensive, end‑to‑end solution for preventing duplicate consumption in RabbitMQ by combining architecture design, routing strategies, idempotent controls, state machines, and ACK mechanisms, and details six concrete implementation options with code examples.

Exactly-OnceIdempotencyMessage Deduplication
0 likes · 9 min read
How to Achieve Exactly‑Once Processing with RabbitMQ: 6 Practical Strategies
Top Architect
Top Architect
Jan 12, 2026 · Backend Development

How to Build a Robust Asynchronous Processing SDK with Spring, Kafka, and XXL‑Job

This article explains the design and implementation of a generic asynchronous processing SDK for Java, covering its purpose, advantages, core principles, component choices, design patterns, configuration via Apollo, usage steps, safety considerations, and provides complete SQL and Spring configuration examples along with a GitHub repository link.

AsynchronousDesign PatternsKafka
0 likes · 11 min read
How to Build a Robust Asynchronous Processing SDK with Spring, Kafka, and XXL‑Job
Java Web Project
Java Web Project
Jan 11, 2026 · Backend Development

Why Your Spring @Transactional Fails: 7 Common Pitfalls and How to Fix Them

This article analyzes seven typical reasons why Spring transactions become ineffective or fail to roll back—such as wrong method visibility, final modifiers, self‑invocation, unmanaged beans, multithreading, non‑transactional tables, mis‑configured propagation or exception handling—and provides concrete code examples and practical solutions.

AOPBackendSpring Boot
0 likes · 21 min read
Why Your Spring @Transactional Fails: 7 Common Pitfalls and How to Fix Them
JavaGuide
JavaGuide
Jan 11, 2026 · Operations

IntelliJ IDEA 2025.3.1.1 Emergency Fix: Resolving Maven Freeze and WSL2 Config Loss

IntelliJ IDEA 2025.3.1 introduced severe Maven project initialization memory leaks and WSL2 file‑system configuration resets, causing IDE freezes and OOM crashes, but JetBrains addressed these issues in the 2025.3.1.1 update and provides temporary workarounds such as cache cleanup, icon disabling, and registry tweaks.

IDE bugsIntelliJ IDEAMaven
0 likes · 6 min read
IntelliJ IDEA 2025.3.1.1 Emergency Fix: Resolving Maven Freeze and WSL2 Config Loss
java1234
java1234
Jan 10, 2026 · Backend Development

Designing a Highly Available Service Registry: Key Principles and Java Example

This article explains how to design a highly available service registry for microservice architectures, covering high‑availability mechanisms, performance optimizations, scalability strategies, core registry functions, and provides a complete Java Spring Boot implementation using Redis.

RedisSpring Boothigh availability
0 likes · 6 min read
Designing a Highly Available Service Registry: Key Principles and Java Example
Top Architect
Top Architect
Jan 10, 2026 · Backend Development

Boost Java Build Speed with Maven‑mvnd: Features, Installation & Usage

This article explains how Maven‑mvnd accelerates Java project builds by using a long‑running daemon to eliminate JVM startup overhead, reduces resource consumption, improves multi‑module builds, and provides step‑by‑step installation, configuration, and usage instructions with practical command examples.

Build OptimizationMavenci/cd
0 likes · 8 min read
Boost Java Build Speed with Maven‑mvnd: Features, Installation & Usage
java1234
java1234
Jan 9, 2026 · Backend Development

Stop Manually Deploying JARs—Dynamic Hot Deployment Made Easy

This article shows how to let users upload a JAR that implements a predefined interface, then hot‑deploy the new implementation at runtime using either Spring annotation‑based registration or plain reflection, including bean registration, removal, and a test harness.

Bean RegistrationDynamic JAR LoadingHot Deployment
0 likes · 8 min read
Stop Manually Deploying JARs—Dynamic Hot Deployment Made Easy
IT Services Circle
IT Services Circle
Jan 9, 2026 · Interview Experience

How to Find the Longest Balanced Substring in a Binary String (LeetCode 2609)

The article presents LeetCode problem 2609, defining a balanced substring as a consecutive segment of zeros followed by an equal number of ones, and provides a linear‑time solution using a two‑pointer scan that counts consecutive zeros and ones, with implementations in Java, C++, Python, and TypeScript, along with complexity analysis.

Balanced SubstringC++LeetCode
0 likes · 7 min read
How to Find the Longest Balanced Substring in a Binary String (LeetCode 2609)
Su San Talks Tech
Su San Talks Tech
Jan 9, 2026 · Backend Development

Mastering Seata TCC: Theory, Types, and Practical Implementation

This article explains the TCC (Try‑Confirm‑Cancel) transaction model, its three practical variants, and provides a step‑by‑step guide with code examples for integrating Seata TCC into a Spring‑Boot e‑commerce order service, while addressing common pitfalls such as idempotency, empty rollbacks, and hanging transactions.

Spring Bootdistributed transactionsjava
0 likes · 18 min read
Mastering Seata TCC: Theory, Types, and Practical Implementation
Java Companion
Java Companion
Jan 9, 2026 · Backend Development

Why Many Large Companies Discourage Using @Transactional in Spring

The article explains common pitfalls that cause Spring @Transactional to fail or not roll back, such as incorrect method visibility, final or static modifiers, internal method calls, beans not managed by Spring, multithreading, unsupported database engines, misconfigured propagation, swallowed exceptions, and improper rollback settings, and offers practical solutions for each case.

AOPBackendMyISAM
0 likes · 18 min read
Why Many Large Companies Discourage Using @Transactional in Spring
Architect
Architect
Jan 8, 2026 · Backend Development

Why Process Orchestration Is Essential for Scalable Backend Systems

The article explains how using a flow engine and plugin‑extension architecture can isolate business logic, simplify adding new services, and avoid tangled if‑else code in large backend platforms, illustrated with concrete Java examples and an open‑source project.

code-isolationflow enginejava
0 likes · 7 min read
Why Process Orchestration Is Essential for Scalable Backend Systems
Architecture Digest
Architecture Digest
Jan 8, 2026 · Backend Development

Why Do Jackson 2 and 3 Coexist? Uncover the 4 Breaking Changes in Jackson 3

After upgrading to Spring Boot 4, the article explains why both Jackson 2 and Jackson 3 appear together, outlines the four major breaking changes—including package reorganization, the shift from ObjectMapper to JsonMapper, new default date serialization, and the removal of checked exceptions—and offers migration tips.

JSONJacksonMigration
0 likes · 6 min read
Why Do Jackson 2 and 3 Coexist? Uncover the 4 Breaking Changes in Jackson 3
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jan 8, 2026 · Backend Development

Master Short‑Lived Microservices with Spring Cloud Task: A Hands‑On Guide

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.

Spring BootSpring Cloud Taskjava
0 likes · 9 min read
Master Short‑Lived Microservices with Spring Cloud Task: A Hands‑On Guide
dbaplus Community
dbaplus Community
Jan 7, 2026 · Backend Development

Why Our Custom Snowflake ID Collided and How to Build a Reliable Generator

A recent production incident caused duplicate order IDs due to a flawed custom Snowflake implementation, prompting a deep dive into the standard algorithm, analysis of the mistakes, and a set of best‑practice recommendations for designing robust distributed ID generators.

Design PatternsDistributed SystemsID generation
0 likes · 7 min read
Why Our Custom Snowflake ID Collided and How to Build a Reliable Generator
Ray's Galactic Tech
Ray's Galactic Tech
Jan 7, 2026 · Backend Development

Why Netty Servers Accumulate CLOSE_WAIT Connections and How to Fix Them

Netty services can accumulate CLOSE_WAIT sockets when the server fails to close its side of the socket, leading to resource exhaustion and potential service collapse; this article explains the TCP state machine, common code pitfalls, kernel tuning, defensive handlers, and a comprehensive checklist to prevent and resolve the issue.

CLOSE_WAITConnection ManagementNetty
0 likes · 8 min read
Why Netty Servers Accumulate CLOSE_WAIT Connections and How to Fix Them
Top Architect
Top Architect
Jan 7, 2026 · Backend Development

Customize Spring Boot Startup Banner with ASCII Art and ANSI Colors

This guide shows how to replace Spring Boot's default console banner by creating a custom banner.txt with ASCII graphics, using built‑in placeholders for version, port, profile and date, adding ANSI color codes, and optionally disabling the default banner to print a fully customized startup message from Java code.

ANSI ColorASCII artBanner
0 likes · 9 min read
Customize Spring Boot Startup Banner with ASCII Art and ANSI Colors
SpringMeng
SpringMeng
Jan 7, 2026 · Interview Experience

Inside Xiao Meng’s Technical Interview: Real Questions and Insights

The article shares Xiao Meng’s full‑stack hiring process, listing practical first‑ and second‑round interview questions—from SQL pagination and SpringBoot CORS to RPC frameworks and AI‑assisted coding—while explaining the company’s focus on hands‑on ability and recent AI tool adoption.

AI coding toolsSpringBootVue
0 likes · 6 min read
Inside Xiao Meng’s Technical Interview: Real Questions and Insights
Eric Tech Circle
Eric Tech Circle
Jan 7, 2026 · Backend Development

Why IntelliJ IDEA 2025.3’s New Islands Theme and AI Features Matter for Java Developers

The article shares a seasoned Java developer’s hands‑on review of IntelliJ IDEA 2025.3, highlighting the new Islands theme, built‑in support for Spring Boot 4 and Java 25, full‑line code completion, and integration of the Claude Code AI plugin, while offering practical usage tips and personal recommendations.

AI pluginIDE FeaturesIntelliJ IDEA
0 likes · 5 min read
Why IntelliJ IDEA 2025.3’s New Islands Theme and AI Features Matter for Java Developers
Woodpecker Software Testing
Woodpecker Software Testing
Jan 6, 2026 · Frontend Development

Detecting On‑Screen Element Visibility with Selenium WebDriver in Java

This guide explains how to determine whether a web element is visible on the screen during Selenium‑based Java automation, covering the basic isDisplayed() check, an enhanced visibility method that validates size, opacity and CSS visibility, strategies for dynamic, iframe and Shadow DOM elements, and practical best‑practice recommendations.

Element VisibilitySeleniumWebDriver
0 likes · 8 min read
Detecting On‑Screen Element Visibility with Selenium WebDriver in Java
Woodpecker Software Testing
Woodpecker Software Testing
Jan 6, 2026 · Backend Development

How ChatGPT Analyzes and Optimizes Application Performance

The article shows how ChatGPT examines JMeter load‑test results, identifies CPU, database and I/O bottlenecks, and then proposes concrete optimizations such as adding indexes, tuning HikariCP pool settings, caching, code refactoring, and monitoring to improve login throughput and latency.

ChatGPTHikariCPJMeter
0 likes · 11 min read
How ChatGPT Analyzes and Optimizes Application Performance
Selected Java Interview Questions
Selected Java Interview Questions
Jan 6, 2026 · Backend Development

Generate Precise Java Javadoc with AI in One Shortcut

This article explains how an IntelliJ plugin uses large‑language‑model AI to read your Java method body and automatically produce accurate Javadoc comments, eliminating the need for manual documentation and overcoming the limitations of simple name‑translation tools.

AIIntelliJJavadoc
0 likes · 6 min read
Generate Precise Java Javadoc with AI in One Shortcut
Top Architect
Top Architect
Jan 6, 2026 · Backend Development

Spring Boot vs Quarkus: Performance Test, Migration Guide, and When to Choose Each

An in‑depth comparison of Spring Boot and Quarkus evaluates startup time, build speed, binary size, CPU, memory, and response latency using reactive APIs and native images, then outlines migration steps, Spring API compatibility, and practical benefits for developers moving Java microservices to Kubernetes‑native environments.

KubernetesQuarkusSpring Boot
0 likes · 16 min read
Spring Boot vs Quarkus: Performance Test, Migration Guide, and When to Choose Each
Tech Freedom Circle
Tech Freedom Circle
Jan 6, 2026 · Backend Development

Why Choose RocketMQ Over Kafka? The Real Reasons Behind the 90% Mistake

This article dissects a common interview question about Kafka's higher throughput versus RocketMQ's richer features, explains the underlying design philosophies, storage models, I/O paths, scaling limits, real‑world use cases such as transaction, delayed and ordered messages, and provides concrete optimization steps and code samples to help engineers make an informed messaging platform choice.

Distributed SystemsKafkaMessage queue
0 likes · 42 min read
Why Choose RocketMQ Over Kafka? The Real Reasons Behind the 90% Mistake
macrozheng
macrozheng
Jan 6, 2026 · Backend Development

Why PageHelper Can Break Your MyBatis Queries and How to Fix It

The article examines unexpected bugs caused by PageHelper’s hidden LIMIT clause injection in MyBatis projects, explains how ThreadLocal pagination parameters persist across requests, and provides practical guidelines and code examples to avoid and clean up these issues.

MyBatisThreadLocaljava
0 likes · 13 min read
Why PageHelper Can Break Your MyBatis Queries and How to Fix It
java1234
java1234
Jan 6, 2026 · Backend Development

What’s the Difference Between @Autowired and @Resource in Spring Boot?

This article explains how @Autowired and @Resource differ in Spring Boot, covering their injection mechanisms, priority rules, applicable environments, and code examples, helping developers choose the appropriate annotation based on type‑based or name‑based injection needs.

AutowiredSpring Bootdependency-injection
0 likes · 4 min read
What’s the Difference Between @Autowired and @Resource in Spring Boot?
java1234
java1234
Jan 6, 2026 · Backend Development

Boost API Latency 10× with Spring Boot 3 and a Three‑Level Local Cache Pyramid

The article explains why adding Redis alone often remains slow, introduces a three‑level cache pyramid (L1 Caffeine, L2 Redis, L3 MySQL) built with Spring Boot 3, and shows how this design reduces request latency from 28 ms to 2 ms, cuts CPU usage by 35 % and achieves up to 14‑fold throughput improvement.

CacheCaffeinePerformance Optimization
0 likes · 10 min read
Boost API Latency 10× with Spring Boot 3 and a Three‑Level Local Cache Pyramid
macrozheng
macrozheng
Jan 5, 2026 · Backend Development

Why @NotEmpty Misses Blank Strings and How @NotBlank Fixes It

The article explains why using @NotEmpty fails to detect blank strings, demonstrates the issue with a simple demo, shows the correct use of StringUtils.isBlank, and clarifies the differences between @NotNull, @NotEmpty, and @NotBlank annotations in Java validation.

StringUtilsjavaspring
0 likes · 4 min read
Why @NotEmpty Misses Blank Strings and How @NotBlank Fixes It
Su San Talks Tech
Su San Talks Tech
Jan 5, 2026 · Backend Development

Master Java ThreadPool Interview Questions: Core Concepts, Parameters, and Best Practices

This guide compiles the most common Java thread‑pool interview questions, explains why and how thread pools are used, details the core parameters and execution flow of ThreadPoolExecutor, explores internal locks, usage patterns, monitoring, rejection policies, common pitfalls, and introduces the DynamicTp management framework.

BlockingQueueJUCJavaInterview
0 likes · 32 min read
Master Java ThreadPool Interview Questions: Core Concepts, Parameters, and Best Practices
Selected Java Interview Questions
Selected Java Interview Questions
Jan 4, 2026 · Backend Development

Master Java Logging with SLF4J, Logback, and Lombok @Slf4j

This tutorial explains why System.out.println() is unsuitable for production logging, shows how to add SLF4J and Logback dependencies, configure logback.xml, use Lombok's @Slf4j annotation to generate a logger, and provides practical code examples for unified API logging and exception tracking.

Backend DevelopmentLoggingLombok
0 likes · 9 min read
Master Java Logging with SLF4J, Logback, and Lombok @Slf4j
Architect's Guide
Architect's Guide
Jan 4, 2026 · Backend Development

Mastering JetCache: A SpringBoot Guide to Distributed Caching

This article introduces JetCache, an open‑source distributed cache built on Spring and Redis, explains its core features and typical use cases, details the main API and annotation support, and provides a step‑by‑step SpringBoot integration guide with full code examples.

JetCacheRedisjava
0 likes · 7 min read
Mastering JetCache: A SpringBoot Guide to Distributed Caching
Java Companion
Java Companion
Jan 4, 2026 · Backend Development

Achieve 10× Faster APIs with Spring Boot 3’s Three‑Level Cache Pyramid

The article demonstrates how to combine Spring Boot 3, Caffeine local cache, and Redis into a three‑level cache pyramid, reducing API response time from 28 ms to 2 ms, cutting CPU usage by 35 %, and providing detailed configuration, code examples, performance benchmarks, and mitigation strategies for common high‑concurrency pitfalls.

CacheCaffeinePerformance
0 likes · 10 min read
Achieve 10× Faster APIs with Spring Boot 3’s Three‑Level Cache Pyramid
java1234
java1234
Jan 3, 2026 · Backend Development

Why Spring and Spring MVC Need Parent‑Child Containers

The article explains the concept of parent‑child containers in Spring, outlines three key benefits—modularization, scoped bean visibility, and configuration reuse—provides step‑by‑step XML and Java code examples, and shows how the containers integrate with Spring MVC to create a cleaner, more maintainable application architecture.

Parent-Child Containerapplicationcontextjava
0 likes · 7 min read
Why Spring and Spring MVC Need Parent‑Child Containers
Java Tech Enthusiast
Java Tech Enthusiast
Jan 3, 2026 · Backend Development

How to Propagate TraceId with Spring MDC Across HTTP, MQ, Thread Pools, and Jobs

This guide explains how to use Spring's built‑in Mapped Diagnostic Context (MDC) to generate a traceId for each request, configure Logback to include it in logs, and propagate the traceId through HTTP filters, RabbitMQ messages, thread‑pool tasks, and XXL‑Job scheduled jobs, complete with code examples and configuration snippets.

LoggingMDCSpring Boot
0 likes · 11 min read
How to Propagate TraceId with Spring MDC Across HTTP, MQ, Thread Pools, and Jobs