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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

Sep 10, 2025 · Backend Development

How to Capture Exceptions from Java ThreadPoolExecutor: submit vs execute

This article explains why tasks submitted with ExecutorService.submit silently swallow exceptions while execute prints them, and demonstrates three practical ways—try‑catch, Thread.setDefaultUncaughtExceptionHandler, and overriding afterExecute—to reliably retrieve exception information from a Java thread pool.

ExceptionHandlingExecutorServiceFuture

0 likes · 14 min read

How to Capture Exceptions from Java ThreadPoolExecutor: submit vs execute

Code Ape Tech Column

Sep 9, 2025 · Information Security

Why Using JWT for Sessions Is a Bad Idea and Safer Alternatives

This article explains why JSON Web Tokens are unsuitable for session storage, outlines the security risks and practical drawbacks, and shows the scenarios where JWTs are appropriate, helping developers make informed authentication choices.

JWTauthenticationsession management

0 likes · 15 min read

Why Using JWT for Sessions Is a Bad Idea and Safer Alternatives

Code Ape Tech Column

Sep 8, 2025 · Backend Development

How to Implement Data Desensitization with YAML and Java Maps

This article explains a step‑by‑step approach to mask sensitive fields in API responses by defining desensitization rules in YAML, loading them into Java Maps, and applying recursive logic to traverse nested structures and replace data using regular expressions.

YAMLdata desensitizationlogging

0 likes · 22 min read

How to Implement Data Desensitization with YAML and Java Maps

Code Ape Tech Column

Sep 5, 2025 · Cloud Native

One-Click Deploy Spring Cloud Microservice via Jenkins, Docker & K8s

This guide walks you through automating the full lifecycle of a Spring Cloud microservice—from pushing code to Git, configuring Jenkins pipelines with SSH keys, building with Maven, packaging into Docker images, pushing to a registry, and finally deploying and updating the service on Kubernetes—all with step‑by‑step commands and scripts.

CI/CDDevOpsDocker

0 likes · 12 min read

One-Click Deploy Spring Cloud Microservice via Jenkins, Docker & K8s

Code Ape Tech Column

Sep 4, 2025 · Backend Development

10 Essential Microservice Best Practices to Boost Efficiency and Security

This article outlines ten practical microservice best practices—including single responsibility, cross‑functional teams, proper tooling, asynchronous communication, DevSecOps, independent data stores, isolated deployment, orchestration, and monitoring—to help developers build scalable, maintainable, and secure backend systems.

Best Practicesbackend architecturecloud native

0 likes · 13 min read

10 Essential Microservice Best Practices to Boost Efficiency and Security

Code Ape Tech Column

Sep 3, 2025 · Backend Development

Building a Flexible Contract Signing Workflow with Chain of Responsibility

This article explains how to design a contract‑signing workflow in Java using the Chain of Responsibility and Strategy patterns, covering the processing steps, project structure, annotation‑driven bean injection, and complete code examples for each component.

AnnotationsDependency InjectionStrategy Pattern

0 likes · 16 min read

Building a Flexible Contract Signing Workflow with Chain of Responsibility

Code Ape Tech Column

Sep 2, 2025 · Operations

Avoid QPS Miscalculations: 5 Proven Methods to Accurately Measure Traffic

This article explains five practical ways to count QPS—from gateway and application instrumentation to monitoring tools, log analysis, and database metrics—while highlighting common pitfalls such as health‑check filtering, thread‑safety, and multi‑node aggregation, helping engineers make informed scaling decisions.

JavaPerformance MonitoringPrometheus

0 likes · 16 min read

Avoid QPS Miscalculations: 5 Proven Methods to Accurately Measure Traffic

Code Ape Tech Column

Sep 1, 2025 · Backend Development

How to Visualize SQL Call Trees in SpringBoot with MyBatis and D3.js

This article demonstrates how to build a SpringBoot‑based SQL call‑tree visualization system using a MyBatis interceptor, D3.js front‑end, and thread‑local context to capture, organize, display and analyze SQL execution hierarchies, performance metrics and slow‑SQL detection for complex business applications.

D3.jsMyBatisSQL Visualization

0 likes · 20 min read

How to Visualize SQL Call Trees in SpringBoot with MyBatis and D3.js

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.

JavaMessage ChannelsTransformers

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