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Code Ape Tech Column
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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
Code Ape Tech Column
Jul 14, 2025 · Backend Development

Mastering Hexagonal Architecture in Spring Boot: 3 Implementation Strategies

This article explains the fundamentals of hexagonal (ports‑and‑adapters) architecture, presents three ways to implement it in Spring Boot—including a classic version, a DDD‑enhanced version, and a simplified variant—while analyzing their advantages, disadvantages, and suitable scenarios.

Domain-Driven DesignHexagonal ArchitectureSoftware Architecture
0 likes · 35 min read
Mastering Hexagonal Architecture in Spring Boot: 3 Implementation Strategies
Code Ape Tech Column
Code Ape Tech Column
Jul 12, 2025 · Backend Development

Mastering OKHttpUtil: Simplify Java HTTP Requests with Ready‑to‑Use Code

This article introduces the lightweight OKHttpUtil wrapper for Java and Kotlin, outlines its key features such as automatic protocol detection, cookie handling, proxy and header configuration, GZIP decompression, and Spring Boot integration, and provides comprehensive code examples for GET, POST, file upload, download, chained requests, and custom API client creation.

APIHTTPJava
0 likes · 10 min read
Mastering OKHttpUtil: Simplify Java HTTP Requests with Ready‑to‑Use Code
Code Ape Tech Column
Code Ape Tech Column
Jul 10, 2025 · Backend Development

Why DDD Is the Missing Piece in Your Microservices Architecture

This article explains how Domain‑Driven Design (DDD) complements microservice architecture by addressing functional partitioning gaps, guiding system decomposition, and improving scalability, while also highlighting common microservice pitfalls and practical steps for clear bounded‑context modeling.

Domain-Driven DesignMicroservicesSoftware Architecture
0 likes · 9 min read
Why DDD Is the Missing Piece in Your Microservices Architecture
Code Ape Tech Column
Code Ape Tech Column
Jul 9, 2025 · Backend Development

Hot‑Deploy Custom Java Interfaces with JARs Using Spring and Reflection

This tutorial demonstrates how to let users upload a JAR that implements a predefined Java interface, then hot‑replace the implementation at runtime via reflection or Spring bean registration, covering interface definition, concrete classes, dynamic class loading, bean management, and testing.

Dynamic LoadingHot DeploymentJAR
0 likes · 9 min read
Hot‑Deploy Custom Java Interfaces with JARs Using Spring and Reflection
Code Ape Tech Column
Code Ape Tech Column
Jul 8, 2025 · Backend Development

Mastering Spring Batch: Real-World Use Cases and Hands‑On Guide

This comprehensive guide explains why batch processing is essential, walks through typical banking, e‑commerce, logging and medical data scenarios, details Spring Batch's core architecture and components, provides step‑by‑step setup and code examples, and presents a production‑grade bank reconciliation case with monitoring and troubleshooting tips.

Data IntegrationJob SchedulingSpring Batch
0 likes · 27 min read
Mastering Spring Batch: Real-World Use Cases and Hands‑On Guide
Code Ape Tech Column
Code Ape Tech Column
Jul 7, 2025 · Operations

How to Deploy Graylog with Docker and Integrate It into Spring Boot

Learn step‑by‑step how to set up Graylog using Docker‑Compose, configure its inputs, and connect a Spring Boot application via Logback‑GELF, enabling centralized log aggregation and searchable queries across multiple service instances in a micro‑services environment.

DockerGraylogLog Aggregation
0 likes · 8 min read
How to Deploy Graylog with Docker and Integrate It into Spring Boot
Code Ape Tech Column
Code Ape Tech Column
Jul 4, 2025 · Backend Development

How Nacos Implements Long‑Polling for Config Synchronization

This article explains the inner workings of Nacos' configuration center, detailing the client‑side long‑polling mechanism, the server‑side handling of listener requests, and the key classes and code paths that enable real‑time config updates in microservice environments.

BackendConfiguration CenterJava
0 likes · 13 min read
How Nacos Implements Long‑Polling for Config Synchronization
Code Ape Tech Column
Code Ape Tech Column
Jul 3, 2025 · Backend Development

How to Detect and Fix Memory Leaks in Spring Boot Applications

This guide explains the fundamentals of memory leaks in Java, outlines common causes in Spring Boot, and provides step‑by‑step techniques—including GC log analysis, JConsole, VisualVM, MAT, Actuator, custom endpoints, jstack, BTrace, and best‑practice recommendations—to identify, diagnose, and prevent memory leaks for stable long‑running services.

Heap DumpJVMMemory Leak
0 likes · 18 min read
How to Detect and Fix Memory Leaks in Spring Boot Applications