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Java Architect Handbook
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Java Architect Handbook

Focused on Java interview questions and practical article sharing, covering algorithms, databases, Spring Boot, microservices, high concurrency, JVM, Docker containers, and ELK-related knowledge. Looking forward to progressing together with you.

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Recent Articles

Latest from Java Architect Handbook

91 recent articles
Java Architect Handbook
Java Architect Handbook
Dec 9, 2025 · Industry Insights

Why Microservices May Be Overhyped: Tracing Their Real Roots and Myths

The article first lists a series of Java learning projects and community benefits, then critically examines the widely touted advantages of microservices, showing how many of those claims originate from older technologies, debunking common myths, and concluding that microservices are essentially just modular code.

Microservicesdistributed-systemsindustry analysis
0 likes · 16 min read
Why Microservices May Be Overhyped: Tracing Their Real Roots and Myths
Java Architect Handbook
Java Architect Handbook
Dec 7, 2025 · Industry Insights

Why Does Apple Charge 30% and When Does It Not Apply?

The article explains Apple's 30% App Store commission, clarifies why services like 12306 train tickets are exempt, outlines the definition of in‑app purchases in the App Store Review Guidelines, and details the developer agreements and recent policy exceptions that affect fee structures.

30% commissionApp StoreApple
0 likes · 7 min read
Why Does Apple Charge 30% and When Does It Not Apply?
Java Architect Handbook
Java Architect Handbook
Dec 4, 2025 · Information Security

Using nmap4j in Java to Scan Ports and Identify Services

This guide explains how to integrate the nmap4j library into Java projects to perform Nmap‑based port scanning, service detection, and OS identification, covering prerequisite setup, key command‑line flags, Windows and Linux implementations, and parsing XML results with Dom4j.

JavaPort scanningnetwork security
0 likes · 14 min read
Using nmap4j in Java to Scan Ports and Identify Services
Java Architect Handbook
Java Architect Handbook
Dec 3, 2025 · Backend Development

Deploy OnlyOffice and Integrate It with Spring Boot & Vue for Word Editing

This guide walks through deploying OnlyOffice (Docker or Ubuntu), configuring the server, adding a Vue front‑end with the OnlyOffice API, building a Spring Boot controller to serve and save documents, handling callbacks, and troubleshooting common issues such as service status, token settings, and proxy configuration.

DocumentEditingJavaOnlyOffice
0 likes · 34 min read
Deploy OnlyOffice and Integrate It with Spring Boot & Vue for Word Editing
Java Architect Handbook
Java Architect Handbook
Dec 2, 2025 · Operations

One‑Click Remote Deployment of Spring Boot with IDEA and Docker

This guide walks you through setting up IntelliJ IDEA and Docker to replace manual jar uploads with a single‑click remote deployment for Spring Boot applications, covering prerequisites, SSH configuration, Docker daemon basics, Dockerfile creation, and the final one‑step deployment process.

DevOpsDockerDockerfile
0 likes · 8 min read
One‑Click Remote Deployment of Spring Boot with IDEA and Docker
Java Architect Handbook
Java Architect Handbook
Nov 30, 2025 · Databases

When Sharding Fails: Debugging Pagination Bugs and Optimizing MySQL for Massive Tables

The article recounts a real‑world case where a massive device table (over 500 million rows) suffered from sharding and Elasticsearch integration issues, describes a pagination bug caused by Sharding‑JDBC, and presents a comprehensive set of hardware, software, and SQL optimization techniques—including MySQL configuration examples—to improve performance.

ElasticsearchMySQLPagination
0 likes · 13 min read
When Sharding Fails: Debugging Pagination Bugs and Optimizing MySQL for Massive Tables
Java Architect Handbook
Java Architect Handbook
Nov 26, 2025 · Databases

Why UUID Primary Keys Slow Down MySQL and How to Optimize Them

This article explains the performance drawbacks of using UUIDs as primary keys in MySQL—including larger indexes, random inserts, and slower comparisons—details why data updates trigger index refreshes, and offers practical optimization techniques such as ordered UUIDs, binary storage, hybrid auto‑increment keys, and table partitioning.

Binary StorageDatabase PerformanceIndex Optimization
0 likes · 8 min read
Why UUID Primary Keys Slow Down MySQL and How to Optimize Them
Java Architect Handbook
Java Architect Handbook
Nov 24, 2025 · Operations

How to Fix Docker Pull Timeouts with Reliable Chinese Mirror Sources (2025 Update)

This guide explains why Docker pull commands often timeout in China due to outdated foreign registries, lists common invalid mirror configurations, provides three verified mirror URLs for 2025, and walks through editing the daemon.json file, restarting Docker, and testing the setup, while sharing practical troubleshooting lessons.

DevOpsDockerLinux
0 likes · 7 min read
How to Fix Docker Pull Timeouts with Reliable Chinese Mirror Sources (2025 Update)