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Code Ape Tech Column

Former Ant Group P8 engineer, pure technologist, sharing full‑stack Java, job interview and career advice through a column. Site: java-family.cn

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Latest from Code Ape Tech Column

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Code Ape Tech Column

Aug 29, 2025 · Backend Development

Master Spring Integration: Build Scalable Message‑Driven Systems with Ease

This article introduces Spring Integration, explains its core concepts such as messages, channels, endpoints, adapters, filters, and transformers, compares it with traditional middleware, and provides detailed XML and Java configuration examples for channels, endpoints, adapters, transformers, routers, integration patterns, interceptors, and a practical order‑processing workflow.

Enterprise IntegrationJavaMessage Channels

0 likes · 21 min read

Master Spring Integration: Build Scalable Message‑Driven Systems with Ease

Code Ape Tech Column

Aug 28, 2025 · Backend Development

Why and How to Replace Fastjson with Gson in Large Java Projects

This article explains why fastjson is being abandoned due to frequent security vulnerabilities, compares fastjson, Jackson, and Gson, and provides practical migration strategies, code examples, performance considerations, and common pitfalls to help teams safely switch to Gson in enterprise Java applications.

FastJSONGsonjson migration

0 likes · 18 min read

Why and How to Replace Fastjson with Gson in Large Java Projects

Code Ape Tech Column

Aug 27, 2025 · Operations

How to Quickly Set Up Ubuntu VMs with Multipass: A Step‑by‑Step Guide

This tutorial walks you through installing Multipass, checking its version, listing available Ubuntu images, launching and managing Ubuntu virtual machines, and automating configuration with cloud‑init, providing all essential commands for efficient local VM workflows.

Cloud‑InitMultipassUbuntu

0 likes · 6 min read

How to Quickly Set Up Ubuntu VMs with Multipass: A Step‑by‑Step Guide

Code Ape Tech Column

Aug 26, 2025 · Backend Development

Boost Your Maven Project Setup: One-Click Multi-Module Generation Plugin

This article introduces a custom IntelliJ IDEA plugin that automates the creation of Maven multi‑module projects, allowing developers to generate full directory structures, pom dependencies, and configuration files with a single command, dramatically reducing setup time from minutes to seconds.

AutomationIntelliJ IDEAJava

0 likes · 10 min read

Boost Your Maven Project Setup: One-Click Multi-Module Generation Plugin

Code Ape Tech Column

Aug 21, 2025 · Backend Development

How to Implement Automatic MySQL Master‑Slave Switching in SpringBoot with AOP

This article explains how to use SpringBoot, AOP, and a custom annotation to dynamically switch between MySQL master and slave databases, automatically falling back to the master when a slave fails, and covers configuration, code implementation, and multi‑source extensions.

AOPDynamicDataSourceJava

0 likes · 15 min read

How to Implement Automatic MySQL Master‑Slave Switching in SpringBoot with AOP

Code Ape Tech Column

Aug 20, 2025 · Backend Development

Switch Between Spring @Scheduled and XXL‑JOB Dynamically with a Configurable Starter

This article explains how to create a Spring Boot starter that lets you toggle between the native @Scheduled scheduler and XXL‑JOB at runtime via a configuration property, automatically scanning annotated methods, disabling Spring's tasks, and registering them as XXL‑JOB jobs with proper logging.

Auto-configurationJavaScheduled Tasks

0 likes · 24 min read

Switch Between Spring @Scheduled and XXL‑JOB Dynamically with a Configurable Starter

Code Ape Tech Column

Aug 13, 2025 · Databases

Master 10 Essential Advanced SQL Concepts Every Data Professional Needs

This article outlines ten crucial intermediate‑to‑advanced SQL techniques—including common table expressions, recursive CTEs, temporary functions, CASE‑WHEN pivots, EXCEPT vs NOT IN, self‑joins, ranking window functions, delta calculations, cumulative sums, and date‑time manipulation—providing explanations and practical query examples for data professionals.

CTEDatabasequery optimization

0 likes · 11 min read

Master 10 Essential Advanced SQL Concepts Every Data Professional Needs

Code Ape Tech Column

Aug 12, 2025 · Operations

How to Use Meteor for Real-Time Java App Diagnosis and Performance Tuning

Meteor, built on Alibaba's Arthas, is a non‑intrusive Java diagnostic console that lets developers monitor running applications, locate performance bottlenecks, memory leaks, and thread deadlocks without restarting services, offering a SpringBoot‑based architecture, quick start commands, and features such as class inspection, live code editing, method monitoring, thread management, and dashboards.

ArthasJavaSpringBoot

0 likes · 4 min read

How to Use Meteor for Real-Time Java App Diagnosis and Performance Tuning

Code Ape Tech Column

Aug 11, 2025 · Backend Development

Why Store All Spring Boot Configurations in a Database? Benefits and Implementation Guide

This article explores the drawbacks of static YAML files in production, compares traditional configuration centers, and presents a database‑driven approach that offers zero extra infrastructure, full control, and simplified architecture, while detailing layered bootstrapping, entity design, dynamic loading, encryption, versioning, and monitoring.

Configuration ManagementDatabase ConfigDynamic Configuration

0 likes · 27 min read

Why Store All Spring Boot Configurations in a Database? Benefits and Implementation Guide

Code Ape Tech Column

Aug 7, 2025 · Backend Development

Replace Cluttered if…else with Java 8 Functional Interfaces

This article shows how to eliminate repetitive if…else statements in Java code by leveraging Java 8 functional interfaces such as Supplier, Consumer, Runnable, and custom interfaces for exception handling, branch processing, and null‑value handling, complete with code examples and diagrams.

BackendFunctional InterfaceJava

0 likes · 6 min read

Replace Cluttered if…else with Java 8 Functional Interfaces