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IT Services Circle
IT Services Circle
May 31, 2026 · Backend Development

Why Hand‑Crafted HTTP Calls to LLMs Are a Pitfall and How Spring AI Solves It

The article analyzes the hidden dangers of writing raw HTTP calls for large language models in Java projects—hard‑coded keys, fragile request bodies, missing retries, no observability—and demonstrates how Spring AI’s unified abstractions, built‑in resilience, streaming, function calling, and seamless Spring integration eliminate these issues while enabling effortless model switching and production‑grade AI services.

AI integrationFunction CallingJava
0 likes · 20 min read
Why Hand‑Crafted HTTP Calls to LLMs Are a Pitfall and How Spring AI Solves It
Su San Talks Tech
Su San Talks Tech
May 30, 2026 · Databases

Why PostgreSQL Beats MySQL for AI‑Driven Applications

The article explains why many developers stuck with MySQL should consider PostgreSQL, highlighting its superior SQL standards support, MVCC concurrency, rich indexing, JSONB performance, full‑text search, extensive extensions, and practical installation and Java integration steps, while also comparing pros, cons, and ideal use cases.

DatabaseFull-Text SearchJSONB
0 likes · 24 min read
Why PostgreSQL Beats MySQL for AI‑Driven Applications
Black & White Path
Black & White Path
May 30, 2026 · Information Security

DigDeep: A Sensitive Information Mining Tool for Penetration Testing

DigDeep is a Java‑based tool that efficiently extracts nearly one hundred types of high‑, medium‑, and low‑risk sensitive data from source files across cloud, mini‑program, app, and web environments, offering recursive scanning, risk‑level filtering, deduplication, and multi‑format export to aid security audits.

DigDeepJavacode audit
0 likes · 4 min read
DigDeep: A Sensitive Information Mining Tool for Penetration Testing
Coder Trainee
Coder Trainee
May 30, 2026 · Information Security

Implementing Fine-Grained Permission Control with Spring Security and OAuth2 (Part 4)

This article walks through building a Spring Security resource server with OAuth2, enabling method‑level, object‑level and URL‑level permission checks using annotations like @PreAuthorize, @PostAuthorize, @PostFilter, and demonstrates configuration, utility helpers, controller examples, testing steps, best practices, and common pitfalls.

JavaOAuth2Spring Boot
0 likes · 17 min read
Implementing Fine-Grained Permission Control with Spring Security and OAuth2 (Part 4)
IoT Full-Stack Technology
IoT Full-Stack Technology
May 29, 2026 · Backend Development

How We Cut a 30‑Second API Call to Under 1 Second on 2 Million Records

In a high‑concurrency transaction system, the author diagnosed a 30‑second API latency caused by costly SQL scans and Java Map creation on over two million rows, then applied SQL aggregation, moved counting logic into PostgreSQL, and introduced a Caffeine cache, ultimately reducing the response time to under 0.8 seconds while highlighting relational‑database limits for massive data.

Caffeine cacheJavaMyBatis
0 likes · 10 min read
How We Cut a 30‑Second API Call to Under 1 Second on 2 Million Records
ITPUB
ITPUB
May 28, 2026 · Backend Development

Skipping Spring Upgrades: Hidden Risks or Upgrade Hazards? Tanzu Spring’s Answer

Enterprise Java teams face mounting technical debt and accelerating security vulnerabilities from outdated Spring versions, a problem amplified by AI‑driven attacks, and Tanzu Spring offers a six‑year extended lifecycle, automated upgrade tooling, AI‑integrated governance, and 24/7 vendor support to safely modernize their applications.

AIJavaSpring Boot
0 likes · 11 min read
Skipping Spring Upgrades: Hidden Risks or Upgrade Hazards? Tanzu Spring’s Answer
Sohu Tech Products
Sohu Tech Products
May 27, 2026 · Backend Development

IDEA + JavaAI: A Hands‑On Review of Building a Mini‑Redis Spring Boot Starter

After struggling with AI‑generated code that failed on global edge cases, the author evaluates the FeiSuan JavaAI IDEA plugin, walking through its five‑agent workflow—from requirement planning to source generation—and demonstrates how it successfully creates a production‑ready mini‑redis Spring Boot starter with thorough testing.

AI Code GenerationAgentIDEA
0 likes · 16 min read
IDEA + JavaAI: A Hands‑On Review of Building a Mini‑Redis Spring Boot Starter
IT Services Circle
IT Services Circle
May 27, 2026 · Backend Development

How to Speed Up IntelliJ IDEA: 10 Essential Fixes

This article lists ten common IntelliJ IDEA problems—from sluggish performance and Lombok errors to Git commit issues and MySQL connection failures—and provides concrete configuration steps, code snippets, and best‑practice recommendations to resolve each pitfall for Java developers.

Code formattingDebuggingEncoding
0 likes · 21 min read
How to Speed Up IntelliJ IDEA: 10 Essential Fixes
Java Architect Handbook
Java Architect Handbook
May 27, 2026 · Fundamentals

What Triggers Young GC vs. Full GC in Java? Interview Guide

The article explains that Young GC fires when the Eden space is full, while Full GC can be triggered by old‑generation shortage, metaspace exhaustion, allocation‑guarantee failure, or an explicit System.gc() call, and provides interview‑ready answers, diagnostic steps, and a comparison table.

Garbage CollectionInterviewJVM
0 likes · 14 min read
What Triggers Young GC vs. Full GC in Java? Interview Guide
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 27, 2026 · Backend Development

Why the Powerful Java WatchService API Is Still Overlooked

This article explains how to use Java's built‑in WatchService API to monitor file‑system changes in real time, covering service creation, directory registration, event handling, key lifecycle, polling methods, a complete runnable example, and an advanced version that leverages virtual threads for efficient concurrency.

File MonitoringJavaNIO
0 likes · 8 min read
Why the Powerful Java WatchService API Is Still Overlooked
Architect's Guide
Architect's Guide
May 27, 2026 · Backend Development

Comprehensive Collection of Java Backend Architecture Diagrams

This article compiles over thirty detailed architecture diagrams covering Java class loaders, JVM, Spring, Hibernate, Android, Linux kernel, cloud computing, and various enterprise technologies, offering developers a visual reference library for understanding and designing Java backend systems.

Backend ArchitectureEnterprise ArchitectureHibernate
0 likes · 5 min read
Comprehensive Collection of Java Backend Architecture Diagrams
Su San Talks Tech
Su San Talks Tech
May 27, 2026 · Artificial Intelligence

Why Switch from Hand‑Written HTTP Calls to Spring AI for Large‑Model Integration?

The article analyzes the drawbacks of manually coding HTTP calls to large language models—hard‑coded keys, fragile request construction, missing retries, and poor observability—and demonstrates how Spring AI’s layered abstraction, unified configuration, built‑in resilience, function calling, RAG support, and seamless Spring ecosystem integration solve these problems for production‑grade Java applications.

Function CallingJavaLLM
0 likes · 24 min read
Why Switch from Hand‑Written HTTP Calls to Spring AI for Large‑Model Integration?
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 27, 2026 · Backend Development

Master Modern Spring Boot Logging: 8 Essential Scenarios Covered

This guide walks through configuring comprehensive logging in Spring Boot 3.5 for eight common scenarios—including JPA SQL, transaction flow, JDBC operations, RestTemplate, RestClient, WebClient, controller requests, and Feign calls—providing concrete code samples, YAML settings, and sample output to help developers troubleshoot and monitor applications effectively.

JavaSpring Bootfeign
0 likes · 12 min read
Master Modern Spring Boot Logging: 8 Essential Scenarios Covered
Su San Talks Tech
Su San Talks Tech
May 26, 2026 · Backend Development

Mybatis-Plus vs Mybatis-Flex: Which ORM Framework Is Best for Your Project?

This article provides a detailed comparison between Mybatis-Plus and Mybatis-Flex, examining their design philosophies, core mechanisms, feature sets, performance benchmarks, database support, dependency weight, and community maturity, and offers practical guidance on choosing the right framework for different project scenarios.

Feature ComparisonJavaMybatis-Flex
0 likes · 19 min read
Mybatis-Plus vs Mybatis-Flex: Which ORM Framework Is Best for Your Project?
IoT Full-Stack Technology
IoT Full-Stack Technology
May 26, 2026 · Backend Development

Build a Real‑Time Message Push Service with Spring Boot, Netty and WebSocket

This article walks through creating a Netty‑based WebSocket server integrated with Spring Boot, covering server bootstrap, global channel management, pipeline configuration, a custom handler for client messages, and a push‑message service that can target individual users or broadcast to all connections, complete with code samples and testing steps.

JavaNettySpring Boot
0 likes · 6 min read
Build a Real‑Time Message Push Service with Spring Boot, Netty and WebSocket
java1234
java1234
May 26, 2026 · Artificial Intelligence

Master Spring AI Alibaba: Build AI Agents, Workflows, and Multi‑Agent Apps with Minimal Java Code

Spring AI Alibaba extends Spring AI with a native agent and workflow framework, integrating Alibaba's DashScope models, ReactAgent, multi‑agent orchestration, Graph workflows, tool calling, memory handling, and production‑grade features, enabling Java developers to create sophisticated AI applications with just a few lines of code.

AI integrationAgent FrameworkDashScope
0 likes · 22 min read
Master Spring AI Alibaba: Build AI Agents, Workflows, and Multi‑Agent Apps with Minimal Java Code
Java Architect Essentials
Java Architect Essentials
May 25, 2026 · Backend Development

AOP Aspect Order Mistakes? Stop Misusing @Order – A Rule That Cuts Interview Errors to Zero

A real‑world incident where mis‑ordered Spring AOP aspects caused payment callbacks to report success while the transaction rolled back leads to a concise rule—smaller @Order values have higher priority—plus pitfalls, three common scenarios, and a four‑step debugging guide that eliminates interview mistakes.

@OrderAspectJDebugging
0 likes · 8 min read
AOP Aspect Order Mistakes? Stop Misusing @Order – A Rule That Cuts Interview Errors to Zero
IT Services Circle
IT Services Circle
May 25, 2026 · Backend Development

Druid vs HikariCP: Which Connection Pool Wins?

This article compares Druid and HikariCP, the two most popular Java database connection pools, by explaining how connection pools work, presenting benchmark results, dissecting HikariCP's lock‑free design and bytecode optimizations, detailing Druid's rich monitoring and security features, and offering a practical decision framework for different scenarios.

Connection PoolDruidHikariCP
0 likes · 19 min read
Druid vs HikariCP: Which Connection Pool Wins?
IoT Full-Stack Technology
IoT Full-Stack Technology
May 25, 2026 · Backend Development

Practical Spring Boot + Netty + WebSocket Message Push

This article walks through building a simple Netty server integrated with Spring Boot and WebSocket, showing how to configure the server, manage channel groups, implement custom handlers, and expose a service that can push messages to individual users or broadcast to all connected clients.

JavaNettySpring Boot
0 likes · 8 min read
Practical Spring Boot + Netty + WebSocket Message Push
Su San Talks Tech
Su San Talks Tech
May 24, 2026 · Backend Development

How to Speed Up IntelliJ IDEA: 10 Essential Fixes for Java Developers

This article lists ten common IntelliJ IDEA pitfalls—such as high memory usage, indexing delays, Lombok errors, broken breakpoints, console encoding issues, unwanted Git commits, slow Maven downloads, classpath mismatches, shortcut conflicts, and automatic code reformatting—and provides step‑by‑step solutions to make the IDE run smoothly for Java and Spring projects.

DebuggingGitIDE optimization
0 likes · 23 min read
How to Speed Up IntelliJ IDEA: 10 Essential Fixes for Java Developers
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 24, 2026 · Backend Development

Stop Returning null! 4 Advanced Optional Patterns

The article explains why returning null from Java service methods is risky, demonstrates how to replace null with Optional as a return type, and presents four advanced Optional usage patterns—including chaining, flatMap, and proper scope—to write safer, more readable Spring Boot code.

Best PracticesFunctional ProgrammingJava
0 likes · 12 min read
Stop Returning null! 4 Advanced Optional Patterns
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 23, 2026 · Artificial Intelligence

Auto‑Splitting AI Agent Tasks and Real‑Time Monitoring with Spring AI + TodoWrite

This article explains how the TodoWriteTool, a Spring AI extension, solves large‑language‑model “mid‑session forgetting” by automatically splitting complex agent tasks into explicit, sequential subtasks and providing real‑time progress monitoring, with a complete Spring Boot 3.5.0 setup, code examples, and a runnable demonstration.

AgentJavaSpring AI
0 likes · 7 min read
Auto‑Splitting AI Agent Tasks and Real‑Time Monitoring with Spring AI + TodoWrite
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 22, 2026 · Fundamentals

Upgrade from Java 8: 8 Powerful Features in Java 21 You Should Know

The article examines why many projects still cling to Java 8 and demonstrates eight transformative Java 21 features—including records, sealed classes, pattern‑matching for instanceof, switch expressions, text blocks, virtual threads, structured concurrency, and enhanced APIs—showing code examples and the benefits they bring to performance, readability, and maintainability.

Javaenhanced-apisjava-21
0 likes · 11 min read
Upgrade from Java 8: 8 Powerful Features in Java 21 You Should Know
Java Architecture Diary
Java Architecture Diary
May 22, 2026 · Artificial Intelligence

What the Javadocs MCP Server Solves for Java AI Development

AI code assistants often misinterpret Java library placeholders because they rely on web searches or bytecode decompilation, which miss Javadoc details; the Javadocs MCP server indexes Maven Central Javadocs, letting AI retrieve accurate method signatures and placeholder rules, and can be added to Claude Code with a simple configuration.

AIClaudeHutool
0 likes · 7 min read
What the Javadocs MCP Server Solves for Java AI Development
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 22, 2026 · Backend Development

Why Hand‑Write WebSocket? Use Spring Boot + Netty‑SocketIO for Simpler Real‑Time Communication

This article walks through building a real‑time bidirectional communication system with Spring Boot 3.5.0 and the Netty‑SocketIO library, covering its core features, Maven setup, server implementation via CommandLineRunner, client HTML/JavaScript code, room support, and testing screenshots.

JavaReal-time communicationSpring Boot
0 likes · 9 min read
Why Hand‑Write WebSocket? Use Spring Boot + Netty‑SocketIO for Simpler Real‑Time Communication
Java Architect Handbook
Java Architect Handbook
May 21, 2026 · Backend Development

How to Diagnose Frequent Full GC in Production Systems? (Second Interview at Taobao)

The article explains why Full GC should be minimized, defines normal versus abnormal GC frequencies, outlines the root causes of Full GC, and provides a step‑by‑step troubleshooting workflow with concrete code snippets, monitoring commands and real‑world examples for Java backend engineers.

Full GCGarbage CollectionJVM Performance
0 likes · 13 min read
How to Diagnose Frequent Full GC in Production Systems? (Second Interview at Taobao)
java1234
java1234
May 21, 2026 · Backend Development

Three Months as an AI Code Babysitter: My Exhausting Journey and Hard Lessons

A veteran Java developer took a 5‑wan‑yuan retail project, relied on an end‑to‑end AI code generator for a month, then faced chaotic project structures, security flaws, and massive refactoring before discovering FeiSuan JavaAI's multi‑agent workflow that finally turned the disaster into a deliverable.

AIBackend DevelopmentDatabase
0 likes · 21 min read
Three Months as an AI Code Babysitter: My Exhausting Journey and Hard Lessons
Su San Talks Tech
Su San Talks Tech
May 21, 2026 · Backend Development

Druid vs HikariCP: Which Java Connection Pool Wins?

The article compares Alibaba’s Druid and Spring Boot’s default HikariCP connection pools, explaining how connection pooling works, presenting benchmark results that show HikariCP’s lower latency and higher TPS, detailing HikariCP’s lock‑free ConcurrentBag and bytecode optimizations, and highlighting Druid’s rich monitoring, SQL firewall and leak detection features to help developers choose the right pool for different scenarios.

Connection PoolDruidHikariCP
0 likes · 18 min read
Druid vs HikariCP: Which Java Connection Pool Wins?
Architecture & Thinking
Architecture & Thinking
May 20, 2026 · Operations

Six‑Step Emergency Plan to Detect, Recover, and Eliminate Message Backlog

In distributed systems, message‑queue backlogs can cripple core services; this article breaks down a six‑step emergency workflow—from alert detection and throttling to temporary scaling, root‑cause analysis, targeted fixes, and final validation—plus long‑term architectural and monitoring strategies, illustrated with real‑world cases and Java code samples.

BacklogIncident ResponseJava
0 likes · 21 min read
Six‑Step Emergency Plan to Detect, Recover, and Eliminate Message Backlog
Coder Trainee
Coder Trainee
May 20, 2026 · Backend Development

Mastering Distributed Transactions in Spring Cloud with Seata (Part 8)

This tutorial walks through why distributed transactions are needed in a Spring Cloud order‑stock‑point scenario, compares local and distributed transaction models, introduces Seata’s architecture and three transaction modes, shows environment setup, code implementation, testing steps, and common pitfalls with solutions.

AT ModeDockerJava
0 likes · 11 min read
Mastering Distributed Transactions in Spring Cloud with Seata (Part 8)
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 20, 2026 · Backend Development

10 Essential Spring Boot Utility Classes to Cut Your Code in Half

This article showcases ten built‑in Spring Boot utilities—including version retrieval, system property access, temporary and home directory handling, method introspection, generic type resolution, process ID extraction, property binding, and package path registration—each illustrated with concise code examples that dramatically reduce the need for custom helper classes.

Code SimplificationGenericTypeResolverJava
0 likes · 11 min read
10 Essential Spring Boot Utility Classes to Cut Your Code in Half
Java Backend Technology
Java Backend Technology
May 19, 2026 · Artificial Intelligence

Top 5 Java AI Frameworks You Should Know

This article reviews the five major Java AI frameworks—Spring AI, LangChain4j, Spring AI Alibaba, AgentScope‑Java, and Semantic Kernel—detailing their architectures, core features, pros and cons, and provides guidance on selecting the right one for different enterprise scenarios.

AIAgentScopeFramework
0 likes · 22 min read
Top 5 Java AI Frameworks You Should Know
java1234
java1234
May 19, 2026 · Backend Development

Why JDK 26’s New Features Are a Game‑Changer for Your Projects

JDK 26 introduces a suite of impactful JEPs—including primitive type pattern matching, G1 GC throughput gains, AOT object caching for faster startup, built‑in PEM encoding, stricter final‑field handling, HTTP/3 support, LazyConstant, structured concurrency, and a mature Vector API—each backed by code examples and performance data to help developers modernize their Java applications.

Javaaot-cacheg1-gc
0 likes · 29 min read
Why JDK 26’s New Features Are a Game‑Changer for Your Projects
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 16, 2026 · Backend Development

14 Advanced Java Collection Tricks to Write Cleaner Code

This article presents fourteen practical Java collection techniques—ranging from creating immutable and empty collections to using computeIfAbsent, Map.merge, Collectors.groupingBy, and EnumMap/EnumSet—each illustrated with concise code snippets and explanations that improve readability, safety, and performance in Spring Boot applications.

CollectionsEnumMapJava
0 likes · 9 min read
14 Advanced Java Collection Tricks to Write Cleaner Code
21CTO
21CTO
May 16, 2026 · Fundamentals

What’s New in JDK 26? Key Language, Library, and Runtime Enhancements

JDK 26, the latest non‑LTS Java release, adds ten JEP‑driven enhancements—including pattern‑matching for instanceof and switch, HTTP/3 support, PEM encoding, structured concurrency, lazy constants, a vector API, Applet removal, final‑mean changes, AOT cache support, and G1 GC throughput gains—providing developers with practical new capabilities to test before the next LTS version.

JEPJavaLanguage
0 likes · 8 min read
What’s New in JDK 26? Key Language, Library, and Runtime Enhancements
Architect's Guide
Architect's Guide
May 15, 2026 · Backend Development

One‑Line HTTP Requests with OKHttpUtil: A Minimal Java Wrapper

The article introduces OKHttpUtil, a lightweight wrapper around Square’s OkHttp library that enables Java developers to perform HTTP GET, POST, file upload, and download operations with a single line of code, includes Maven setup, Spring Boot integration, fluent API usage, and examples of wrapping external services such as eBay.

API wrapperHTTP clientHTTP request
0 likes · 10 min read
One‑Line HTTP Requests with OKHttpUtil: A Minimal Java Wrapper
Java Architect Essentials
Java Architect Essentials
May 13, 2026 · Backend Development

Boost CRUD Efficiency with MyBatisPlus Pro: A BaseController Guide

This article introduces MyBatisPlus Pro, walks through adding the MyBatisPlus dependency, creating a utility class, defining a generic BaseController with full CRUD, pagination support, and shows how to extend it in specific controllers, providing a ready‑to‑use RESTful API template.

BaseControllerCRUDJava
0 likes · 9 min read
Boost CRUD Efficiency with MyBatisPlus Pro: A BaseController Guide
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 12, 2026 · Backend Development

Reproducing Three Classic Spring Boot Concurrency Deadlocks in Just 10 Lines

The article explains three typical deadlock scenarios in Spring Boot 3.5—circular‑wait, connection‑pool starvation, and implicit DML deadlocks—shows minimal 10‑line code reproductions, demonstrates the resulting errors, and provides concrete fixes such as ordered locking, removing REQUIRES_NEW propagation, and using asynchronous events.

JavaSpring Bootconcurrency
0 likes · 9 min read
Reproducing Three Classic Spring Boot Concurrency Deadlocks in Just 10 Lines
Architect's Guide
Architect's Guide
May 11, 2026 · Backend Development

Why UUID Falls Short and How Snowflake Solves Distributed ID Generation

The article examines the limitations of UUIDs for distributed systems, outlines the strict requirements for global unique IDs, compares common approaches such as database auto‑increment and Redis, and provides a detailed analysis of Twitter's Snowflake algorithm with its structure, Java implementation, advantages, drawbacks, and mitigation strategies.

JavaRedisbackend
0 likes · 14 min read
Why UUID Falls Short and How Snowflake Solves Distributed ID Generation
ZhiKe AI
ZhiKe AI
May 11, 2026 · Backend Development

Java Rewrites OpenClaw: An Architecture‑Level Translation, Not a Simple Port

A Java team rebuilt the popular Node.js AI‑Agent platform OpenClaw from scratch, replacing AI‑generated “vibe code” with a carefully refactored architecture that leverages Spring AI, JobRunr, and Spring Modulith, and demonstrates how to run the new Java version with just a few commands.

AI agentsArchitecture TranslationJava
0 likes · 16 min read
Java Rewrites OpenClaw: An Architecture‑Level Translation, Not a Simple Port
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 11, 2026 · Backend Development

Boost Performance: Using DataLoader in Spring Boot for Efficient Batch Processing

This article explains how to integrate the Java‑DataLoader library into a Spring Boot 3.5.0 application, covering dependency setup, entity and repository definitions, service methods, DataLoader configuration, testing, contextual loading, and custom two‑level caching to achieve high‑performance batch data fetching.

Batch LoadingCachingDataLoader
0 likes · 12 min read
Boost Performance: Using DataLoader in Spring Boot for Efficient Batch Processing
java1234
java1234
May 10, 2026 · Artificial Intelligence

Bringing Python‑Level AI Agents to Java Production: A Deep Dive into AgentScope Java

AgentScope Java is an open‑source, agent‑oriented framework that brings ReAct, tool calling, memory, multi‑agent collaboration, runtime intervention, plug‑in integration, reactive architecture, GraalVM native images and OpenTelemetry observability to Java, enabling production‑grade AI agents with familiar Java tooling.

AI agentsAgentScope JavaJava
0 likes · 9 min read
Bringing Python‑Level AI Agents to Java Production: A Deep Dive into AgentScope Java
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 9, 2026 · Backend Development

9 Essential Java Code Optimizations to Eliminate Bad Practices

This article presents nine practical Java code‑optimization techniques—including string formatting, loop refactoring, resource management, buffered I/O, multithreading, enums, exception handling, and third‑party libraries—each illustrated with before‑and‑after code samples and clear explanations of why the improved version is more readable, efficient, and maintainable.

Best PracticesCode OptimizationException Handling
0 likes · 14 min read
9 Essential Java Code Optimizations to Eliminate Bad Practices
ITPUB
ITPUB
May 7, 2026 · R&D Management

How a 35‑Year‑Old Engineer Built a Technical Management Career in IT

The author recounts a 16‑year IT journey—from unproductive early jobs and frequent moves, through a pivotal switch to a major internet firm, to successive roles as tech lead, manager, and backend head—highlighting the challenges, decisions, and lessons that shaped a successful technical leadership path.

JavaSystem ArchitectureTechnical Management
0 likes · 23 min read
How a 35‑Year‑Old Engineer Built a Technical Management Career in IT
Architect's Guide
Architect's Guide
May 7, 2026 · Artificial Intelligence

Spring AI 2.0 vs LangChain4j: Which Should You Choose?

The article provides a side‑by‑side analysis of Spring AI 2.0 and LangChain4j, comparing their goals, version alignment, programming models, RAG and agent capabilities, ecosystem integration, learning curve, and operational considerations to help Java teams decide which library best fits their project constraints.

AI agentsJavaLLM integration
0 likes · 11 min read
Spring AI 2.0 vs LangChain4j: Which Should You Choose?
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 7, 2026 · Information Security

Secure Anything with Google Tink: Encrypt Everywhere in Just Three Lines

This article introduces Google Tink, an open‑source cryptographic library for Java, explains its design goals and primitive abstractions, and walks through concise code examples that generate keysets, perform AEAD encryption, stream large files, compute MACs, and create digital signatures, all with minimal boilerplate.

AEADGoogle TinkJava
0 likes · 13 min read
Secure Anything with Google Tink: Encrypt Everywhere in Just Three Lines
Architect's Guide
Architect's Guide
May 6, 2026 · Backend Development

Quickly Implement API Encryption in Spring Boot with a Single Library

This article walks through using RSA to encrypt Spring Boot API responses, covering the theory behind RSA, two security scenarios, Maven dependency setup, configuration, controller annotations, encryption/decryption code, a front‑end JavaScript example, common pitfalls, and a final security summary.

JavaRSASpring Boot
0 likes · 11 min read
Quickly Implement API Encryption in Spring Boot with a Single Library
Coder Trainee
Coder Trainee
May 6, 2026 · Backend Development

Spring Boot Auto-Configuration: In‑Depth Source Code Walkthrough

This article explores the complete execution flow of Spring Boot’s auto‑configuration, detailing the role of @EnableAutoConfiguration, the AutoConfigurationImportSelector hierarchy, how candidate configurations are loaded from spring.factories, filtered by conditions, and how to create custom starters, with interview‑style Q&A.

Backend DevelopmentConditional AnnotationsCustom Starter
0 likes · 12 min read
Spring Boot Auto-Configuration: In‑Depth Source Code Walkthrough
Java Tech Enthusiast
Java Tech Enthusiast
May 5, 2026 · Backend Development

Quick Start Guide to Using EasyExcel with Spring Boot 3 (Verified)

This tutorial walks through building a Spring Boot 3 project that integrates Alibaba's EasyExcel for Excel export and import, covering project structure, Maven dependencies, entity mapping, listener implementation, service and controller code, testing endpoints, and key Spring Boot 3 considerations such as Jakarta packages, JDK 17+, response header handling, memory management, and production‑grade best practices.

Backend DevelopmentExcel ImportJava
0 likes · 14 min read
Quick Start Guide to Using EasyExcel with Spring Boot 3 (Verified)
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 5, 2026 · Backend Development

Stop Manually Concatenating URLs: Master Spring Boot’s Powerful URI Utilities

This article walks through Spring Boot 3.5.0’s URI building tools—including UriComponents, UriBuilderFactory, encoding options, ServletUriComponentsBuilder, and MVC link generation—showing how to construct correct, automatically‑encoded URLs for RestTemplate, WebClient, and controller methods with concrete code examples and outputs.

JavaSpring Bootresttemplate
0 likes · 8 min read
Stop Manually Concatenating URLs: Master Spring Boot’s Powerful URI Utilities
Architect's Guide
Architect's Guide
May 5, 2026 · Backend Development

Why This Lightweight Rule Engine Lets You Ditch If‑Else Statements

The article introduces the liteflow rule‑engine framework, explains its architecture, component types, EL rule files, data‑context handling, configuration options, and demonstrates a real‑world e‑commerce workflow that replaces verbose if‑else code with concise rule definitions.

JavaLiteFlowRule Engine
0 likes · 9 min read
Why This Lightweight Rule Engine Lets You Ditch If‑Else Statements
java1234
java1234
May 5, 2026 · Artificial Intelligence

Spring AI 2.0: New Video Tutorial Series Empowers Java Developers with AI

The author announces a refreshed Spring AI 2.0 video tutorial series and provides a detailed overview of the framework’s design goals, provider‑agnostic API, full‑type model support, Spring integration, enterprise value, typical use cases, and a comparison with competing Java AI libraries.

AI FrameworkJavaLangChain4j
0 likes · 7 min read
Spring AI 2.0: New Video Tutorial Series Empowers Java Developers with AI
Coder Trainee
Coder Trainee
May 5, 2026 · Backend Development

What Does @SpringBootApplication Actually Do? A Deep Dive into Spring Boot’s Core Annotation

This article dissects the @SpringBootApplication annotation, explaining how it combines @SpringBootConfiguration, @EnableAutoConfiguration, and @ComponentScan, and walks through the auto‑configuration mechanism, conditional annotations, and common interview questions with concrete code examples.

@SpringBootApplicationBackend DevelopmentComponentScan
0 likes · 10 min read
What Does @SpringBootApplication Actually Do? A Deep Dive into Spring Boot’s Core Annotation
Java Tech Enthusiast
Java Tech Enthusiast
May 4, 2026 · Backend Development

Minimalist Spring Boot 3: Annotation‑Based Efficient Sensitive‑Word Handling

This guide demonstrates how to use a custom @SensitiveFilter annotation together with an AOP aspect and the lightweight sensitive‑word library to implement global sensitive‑word filtering in Spring Boot 3, supporting both automatic replacement and detection modes while eliminating repetitive code across controllers.

AOPJavaSensitive Word Filtering
0 likes · 14 min read
Minimalist Spring Boot 3: Annotation‑Based Efficient Sensitive‑Word Handling
java1234
java1234
May 4, 2026 · Backend Development

Building a WeChat Mini‑Program Pet Adoption System in 20 Minutes with Cursor AI

In just 20 minutes, the author uses Cursor AI with Opus 4.7 to create a complete pet‑adoption solution that includes a WeChat mini‑program front‑end, a Vue‑based admin portal, and a Spring Boot backend with JWT security, demonstrating rapid AI‑assisted development and detailed architecture.

Cursor AIJavaPet Adoption
0 likes · 9 min read
Building a WeChat Mini‑Program Pet Adoption System in 20 Minutes with Cursor AI
Coder Trainee
Coder Trainee
May 4, 2026 · Backend Development

Spring Boot Startup Process: A Zero‑to‑One Source Code Walkthrough

This article dissects the Spring Boot startup sequence step by step, showing how a minimal @SpringBootApplication triggers listeners, type deduction, auto‑configuration loading, environment preparation, IOC container creation, bean refresh, and embedded Tomcat launch, with interview‑ready explanations.

InterviewJavaSpring Boot
0 likes · 9 min read
Spring Boot Startup Process: A Zero‑to‑One Source Code Walkthrough
Java Tech Enthusiast
Java Tech Enthusiast
May 3, 2026 · Backend Development

Escape the If‑Else Nightmare with Powerful Workflow Orchestration

The article explains how excessive if‑else branching in multi‑business Java systems harms maintainability and reliability, and demonstrates how a flow engine combined with plugin extensions can isolate code, configure per‑business execution chains, and safely handle success, rollback, and callbacks.

JavaOrchestrationcode isolation
0 likes · 6 min read
Escape the If‑Else Nightmare with Powerful Workflow Orchestration
IT Services Circle
IT Services Circle
May 2, 2026 · Fundamentals

7 Recurring Mistakes I See in Every PR After Reviewing Over 1,000

After reviewing more than a thousand pull requests, the author identifies seven recurring problems—unreadable code, hidden error handling, thread‑safety oversights, N+1 database queries, hard‑coded configuration, ignoring failure paths, and overly large PRs—and explains why they matter and how to avoid them.

Best PracticesCode ReviewJava
0 likes · 13 min read
7 Recurring Mistakes I See in Every PR After Reviewing Over 1,000
Java Tech Enthusiast
Java Tech Enthusiast
May 2, 2026 · Backend Development

10 Common MyBatis‑Plus Pitfalls and How to Avoid Them

This article enumerates ten frequent pitfalls when using MyBatis‑Plus—such as incorrect total counts in pagination, pagination interceptor misconfiguration, logical‑delete failures, auto‑fill issues, optimistic‑lock mismatches, null handling in query wrappers, poor batch‑insert performance, enum mapping errors, type‑handler problems, and overall pros and cons—providing concrete examples, root‑cause analysis, and practical solutions for each.

BatchInsertEnumMappingJava
0 likes · 20 min read
10 Common MyBatis‑Plus Pitfalls and How to Avoid Them
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 2, 2026 · Backend Development

Beyond Controller Validation: 90% Miss Spring’s Advanced Validation Techniques

The article explains how standard Spring Boot controller‑level validation leaves service methods unchecked, and demonstrates using @Validated with MethodValidationPostProcessor, custom exception handling, and a MethodValidationExcludeFilter to apply, convert, and selectively disable validation across the application.

Custom FilterException HandlingJava
0 likes · 7 min read
Beyond Controller Validation: 90% Miss Spring’s Advanced Validation Techniques
IT Services Circle
IT Services Circle
May 1, 2026 · Artificial Intelligence

10 Essential AI Prompt Templates Every Programmer Should Use

The article presents ten practical AI prompt templates that cover the full software development workflow—from requirement clarification and code generation to testing, refactoring, debugging, performance tuning, SQL optimization, documentation, design review, and cross‑language translation—helping developers get accurate, production‑ready results from AI.

AI promptingDebuggingJava
0 likes · 12 min read
10 Essential AI Prompt Templates Every Programmer Should Use
Architect's Guide
Architect's Guide
May 1, 2026 · Backend Development

Senior Architects Reveal a Comprehensive Learning Roadmap for Aspiring System Designers

The article outlines a step‑by‑step learning system compiled by senior architects, covering skill foundations, source‑code analysis, distributed and microservice architectures, concurrency, performance tuning, essential Java tools, and a hands‑on e‑commerce project to help developers become well‑rounded architects.

Distributed SystemsJavaMicroservices
0 likes · 7 min read
Senior Architects Reveal a Comprehensive Learning Roadmap for Aspiring System Designers
FunTester
FunTester
Apr 30, 2026 · Backend Development

Understanding Gatherer and Groovy’s Collection Capabilities

The article explains how JDK 24’s Gatherer API extends Java streams with custom intermediate operations, compares its functionality to Groovy’s rich collection methods, and provides concrete Gatherer implementations for slicing, fixed and sliding windows, folding, and subsequence detection, complete with runnable code examples.

CollectionFunctional ProgrammingGatherer
0 likes · 16 min read
Understanding Gatherer and Groovy’s Collection Capabilities
IT Services Circle
IT Services Circle
Apr 30, 2026 · Backend Development

How a Single Front‑end Change Dragged Four Backend Teams – The BFF Solution

A tiny UI tweak that required a meeting with four backend groups exposed the pain of calling many micro‑services from the front‑end, and the article shows how introducing a Backend‑For‑Frontend (BFF) layer can aggregate, transform, and simplify those calls while improving reliability and performance.

API AggregationBFFBackend For Frontend
0 likes · 21 min read
How a Single Front‑end Change Dragged Four Backend Teams – The BFF Solution
MeowKitty Programming
MeowKitty Programming
Apr 30, 2026 · Backend Development

Why Codex Agents Are Redefining the Java Developer Workflow

The article analyzes how OpenAI's Codex CLI, an AI coding agent, is shifting Java development from manual code writing to task‑oriented automation, outlining suitable use cases, practical prompting techniques, and the new skills engineers must adopt to keep quality and control.

AI coding agentCode ReviewCodex
0 likes · 7 min read
Why Codex Agents Are Redefining the Java Developer Workflow
Java Architect Handbook
Java Architect Handbook
Apr 30, 2026 · Fundamentals

What Is a Daemon Thread and How Does It Differ From a Normal Thread?

The article explains that a daemon (background) thread in Java supports user threads but does not prevent JVM shutdown; when all non‑daemon threads finish, the JVM exits regardless of daemon threads, covering definitions, usage scenarios, creation methods, pitfalls, detailed comparisons, and typical interview questions.

DaemonThreadJVMJava
0 likes · 10 min read
What Is a Daemon Thread and How Does It Differ From a Normal Thread?
macrozheng
macrozheng
Apr 30, 2026 · Operations

How AI-Powered Arthas with MCP Transforms Online Issue Diagnosis

The article explains how integrating Arthas with the Model Context Protocol (MCP) enables AI-driven, natural‑language troubleshooting of Java‑based online incidents, offering step‑by‑step diagnostics, concrete case studies, and a balanced view of its advantages and current limitations.

AI debuggingArthasJava
0 likes · 11 min read
How AI-Powered Arthas with MCP Transforms Online Issue Diagnosis
Java Companion
Java Companion
Apr 30, 2026 · Backend Development

JDK 26 Introduces ofFileChannel: Simplify Large File Chunk Uploads

JDK 26 adds HttpRequest.BodyPublishers.ofFileChannel, letting developers read specific file segments directly from a shared FileChannel without copying data into heap memory, dramatically reducing memory usage and simplifying parallel chunk uploads to object storage such as OSS or S3.

FileChannelHttpClientJava
0 likes · 12 min read
JDK 26 Introduces ofFileChannel: Simplify Large File Chunk Uploads
MeowKitty Programming
MeowKitty Programming
Apr 29, 2026 · Artificial Intelligence

10 Must‑Try Open‑Source AI Projects for Java Developers: RAG, Agents, Knowledge Bases, and Text‑to‑SQL

This article curates ten open‑source AI projects on Gitee that Java developers can use to learn RAG pipelines, AI agents, knowledge‑base construction, Text‑to‑SQL, workflow orchestration, and multi‑model integration, offering concrete use cases, learning goals, and guidance on selecting a learning path.

AIJavaLangChain4j
0 likes · 13 min read
10 Must‑Try Open‑Source AI Projects for Java Developers: RAG, Agents, Knowledge Bases, and Text‑to‑SQL
Java Architect Handbook
Java Architect Handbook
Apr 29, 2026 · Backend Development

How Many Ways Can You Create a ThreadPool in Java? Interview Essentials

The article explains the four ways to create a thread pool in Java, why the Executors factory methods are unsafe for production, how to manually configure ThreadPoolExecutor with its seven parameters, and compares scheduled and ForkJoin pools while providing interview‑focused Q&A and practical configuration formulas.

ExecutorsForkJoinPoolJava
0 likes · 14 min read
How Many Ways Can You Create a ThreadPool in Java? Interview Essentials
IT Services Circle
IT Services Circle
Apr 29, 2026 · Backend Development

10 Common MyBatis-Plus Pitfalls and How to Avoid Them

This article analyzes ten frequent pitfalls when using MyBatis-Plus—such as incorrect pagination totals, pagination plugin misconfiguration, logical delete failures, auto‑fill issues, optimistic‑lock mismatches, null handling in QueryWrapper, batch‑insert performance, enum mapping errors, wrapper condition overrides, and type‑handler problems—provides root‑cause explanations, concrete code examples, and practical solutions to help developers write more robust and efficient Java backend code.

Batch InsertEnum MappingJava
0 likes · 19 min read
10 Common MyBatis-Plus Pitfalls and How to Avoid Them
Architect's Guide
Architect's Guide
Apr 29, 2026 · Backend Development

How to Use Spring Boot, Netty, and WebSocket for Server‑to‑Client Push

This article walks through building a Netty‑based WebSocket server integrated with Spring Boot, configuring the channel pipeline, implementing custom handlers, exposing a push‑message service, and testing the end‑to‑end flow that enables the backend to push real‑time messages to web clients.

JavaNettyServer Push
0 likes · 8 min read
How to Use Spring Boot, Netty, and WebSocket for Server‑to‑Client Push
Su San Talks Tech
Su San Talks Tech
Apr 29, 2026 · Artificial Intelligence

10 Essential AI Prompt Templates Every Programmer Should Use

The article explains why well‑crafted prompts are crucial for AI‑assisted programming, introduces the STAR principle for prompt design, and provides ten ready‑to‑use prompt templates covering requirement analysis, test generation, code explanation, refactoring, debugging, performance tuning, SQL design, documentation, architecture review, and language translation.

AI promptingJavabackend
0 likes · 12 min read
10 Essential AI Prompt Templates Every Programmer Should Use
Architecture & Thinking
Architecture & Thinking
Apr 29, 2026 · Backend Development

Must‑Know CompletableFuture: Usage, Best Practices, and Real‑World Scenarios

This article explains why CompletableFuture replaces traditional Future in high‑concurrency Java applications, demonstrates core APIs such as runAsync, supplyAsync, thenApply, allOf, anyOf, thenCombine, and exception handling, and provides detailed code examples—including serial, parallel, aggregation, and an e‑commerce order‑processing case—to guide robust asynchronous programming.

CompletableFutureException HandlingJava
0 likes · 26 min read
Must‑Know CompletableFuture: Usage, Best Practices, and Real‑World Scenarios
The Dominant Programmer
The Dominant Programmer
Apr 29, 2026 · Backend Development

Spring MVC + OpenFeign: Contract‑First API, Controller Logic, and Feign Reuse in Microservices

This article explains a standard Spring MVC + OpenFeign design pattern for microservices, where a contract‑first interface defines routing and API specs, Controllers implement business logic, and Feign clients reuse the same interface for remote calls, with full Maven project setup, code samples, and Nacos integration.

Contract-FirstJavaMaven
0 likes · 15 min read
Spring MVC + OpenFeign: Contract‑First API, Controller Logic, and Feign Reuse in Microservices
Top Architect
Top Architect
Apr 28, 2026 · Backend Development

Elegant API Rate Limiting with Spring Interceptor and Redis

This article demonstrates a step‑by‑step implementation of API anti‑brush (rate limiting) using a Spring Interceptor combined with Redis, explains how to configure time windows and request limits, introduces a custom @AccessLimit annotation for fine‑grained control, discusses path‑parameter pitfalls, real‑IP handling, and shares practical testing results.

API SecurityInterceptorJava
0 likes · 20 min read
Elegant API Rate Limiting with Spring Interceptor and Redis