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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

Nov 11, 2025 · Backend Development

Pass User Info from Filter to Controller via Spring MVC Argument Resolver

This article explains how to transfer the current user ID extracted from a JWT token in a filter to Spring MVC controller methods using a custom HandlerMethodArgumentResolver, highlighting drawbacks of ThreadLocal and request attributes, and demonstrating a type‑safe, extensible solution with code examples.

FilterHandlerMethodArgumentResolverJava

0 likes · 11 min read

Pass User Info from Filter to Controller via Spring MVC Argument Resolver

Code Ape Tech Column

Nov 10, 2025 · Databases

How to Quickly Identify and Optimize MySQL Slow Queries

This guide explains how to enable MySQL slow‑query logging, set appropriate thresholds, locate problematic SQL statements, analyze execution plans with EXPLAIN, and apply index or query rewrites to dramatically improve performance.

ExplainMySQLPerformance

0 likes · 10 min read

How to Quickly Identify and Optimize MySQL Slow Queries

Code Ape Tech Column

Nov 6, 2025 · Backend Development

Simplify File Downloads in Spring with a One‑Annotation Library

This article introduces a Spring‑based download library that lets developers add a single @Download annotation to any controller method to automatically handle file, HTTP resource, or text downloads, supporting concurrent loading, compression, and both WebMVC and WebFlux response models.

AnnotationDownloadFile Compression

0 likes · 15 min read

Simplify File Downloads in Spring with a One‑Annotation Library

Code Ape Tech Column

Nov 5, 2025 · Backend Development

How Jeandle Leverages LLVM to Supercharge JVM Performance

Jeandle, an open‑source JIT compiler built on LLVM, brings advanced optimization and code generation to the OpenJDK HotSpot JVM, promising dramatic performance gains, modular extensibility, and a roadmap that includes full bytecode support, custom Java optimizations, and modern garbage‑collection integration.

CompilerJVMLLVM

0 likes · 6 min read

How Jeandle Leverages LLVM to Supercharge JVM Performance

Code Ape Tech Column

Nov 4, 2025 · Backend Development

Master MyBatis Dynamic SQL: 9 Essential Tags and Best Practices

This article walks through nine powerful MyBatis dynamic SQL tags—including foreach, if, choose, selectKey, trim, and sql fragments—explaining their attributes, common pitfalls, and providing complete XML and Java examples to help developers write cleaner, error‑free queries and updates.

BackendDynamic SQLJava

0 likes · 17 min read

Master MyBatis Dynamic SQL: 9 Essential Tags and Best Practices

Code Ape Tech Column

Nov 3, 2025 · Cloud Native

Why Choose Podman Over Docker? Complete Guide to Features, Commands, and Setup

This article explains what Podman is, highlights its key differences from Docker—including daemon‑less and rootless operation—covers installation, configuration, common commands, image handling, volume management, and how to set up registry accelerators for efficient container workflows.

Docker alternativeLinuxPodman

0 likes · 18 min read

Why Choose Podman Over Docker? Complete Guide to Features, Commands, and Setup

Code Ape Tech Column

Oct 31, 2025 · Backend Development

How to Refactor Spring Controllers for Unified Responses and Robust Validation

This article explains how to redesign Spring MVC controllers by introducing a unified response wrapper, handling String conversion issues, applying JSR‑303 validation, creating custom validators, and centralizing exception handling to produce clean, maintainable backend code.

ControllerException HandlingJava

0 likes · 17 min read

How to Refactor Spring Controllers for Unified Responses and Robust Validation

Code Ape Tech Column

Oct 30, 2025 · Backend Development

Boost Spring Boot APIs with Graceful Response: Unified Error Handling & Response Wrapping

This article introduces Graceful Response, a Spring Boot component that provides one‑stop unified response wrapping, global exception handling, and custom error codes, showing how to integrate it via Maven, enable it with annotations, and simplify controller and service code while improving readability and reducing boilerplate.

APIException HandlingGraceful Response

0 likes · 12 min read

Boost Spring Boot APIs with Graceful Response: Unified Error Handling & Response Wrapping

Code Ape Tech Column

Oct 29, 2025 · Cloud Native

Is Docker Losing Its Edge? Exploring Next‑Gen Container Solutions

The article examines Docker's diminishing dominance, outlines its historical contributions and current limitations, and explores emerging lightweight alternatives, modern runtimes, micro‑Kubernetes solutions, and AI‑driven orchestration, guiding developers toward a more secure, efficient, and customizable container ecosystem.

DockerKubernetesalternatives

0 likes · 10 min read

Is Docker Losing Its Edge? Exploring Next‑Gen Container Solutions

Code Ape Tech Column

Oct 28, 2025 · Backend Development

How to Build a Lightweight Spring Boot API Firewall for Real‑Time Protection

This article walks through the design and implementation of a lightweight API firewall embedded in a Spring Boot application, covering background pain points, architecture, core capabilities such as black‑white list, rate limiting, online configuration, detailed Java code, front‑end console, deployment, and practical use cases.

BlacklistMicroservicesapi-firewall

0 likes · 27 min read

How to Build a Lightweight Spring Boot API Firewall for Real‑Time Protection