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Programmer DD
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Programmer DD

A tinkering programmer and author of "Spring Cloud Microservices in Action"

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Latest from Programmer DD

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Programmer DD
Programmer DD
Aug 6, 2025 · Artificial Intelligence

What Is GPT-OSS? Inside OpenAI’s New Open‑Source Large Language Models

OpenAI has unveiled GPT‑OSS, an open‑source large language model series featuring a 120‑billion‑parameter version for high‑throughput production and a 20‑billion‑parameter version for low‑latency consumer hardware, both using Mixture‑of‑Experts architecture, 4‑bit quantization, and released under the permissive Apache 2.0 license.

4-bit quantizationApache 2.0 licenseGPT-OSS
0 likes · 3 min read
What Is GPT-OSS? Inside OpenAI’s New Open‑Source Large Language Models
Programmer DD
Programmer DD
Jun 16, 2025 · Backend Development

Why Self-Contained Systems Might Replace Microservices: Key Differences Explained

This article introduces Self-Contained Systems (SCS) as an alternative to microservices, outlines SCS core characteristics, compares both approaches across granularity, communication, UI handling and integration, and concludes with practical insights for large‑scale, multi‑team projects.

Architecturebackendself-contained systems
0 likes · 8 min read
Why Self-Contained Systems Might Replace Microservices: Key Differences Explained
Programmer DD
Programmer DD
Jun 4, 2025 · Backend Development

How a Spring Boot Upgrade Cut Our AWS Bill by 45%

Facing a soaring AWS bill despite stable traffic, we traced the cost to over‑provisioned EC2 instances and leaking database connections, then upgraded to Spring Boot 3.5 and applied targeted pool, transaction, and JPA tweaks, achieving a 45% reduction in monthly spend while boosting performance and reliability.

Database Connectionaws-cost-optimizationperformance-tuning
0 likes · 16 min read
How a Spring Boot Upgrade Cut Our AWS Bill by 45%
Programmer DD
Programmer DD
May 21, 2025 · Artificial Intelligence

What’s New in Spring AI 1.0 GA? A Deep Dive into Java AI Features

Spring AI 1.0 GA introduces a comprehensive suite of AI capabilities for Java developers, including a ChatClient supporting 20 models, vector‑store integrations, RAG pipelines, advanced chat memory, @Tool function calling, model evaluation, observability, Model Context Protocol, and autonomous agents, with examples for major cloud providers.

AI modelsJavaMCP
0 likes · 6 min read
What’s New in Spring AI 1.0 GA? A Deep Dive into Java AI Features
Programmer DD
Programmer DD
May 17, 2025 · Backend Development

Unlock Dynamic Fields in Hibernate: Master @Formula for Read‑Only Calculations

The article explains Hibernate's @Formula annotation, showing how to define dynamic, read‑only fields with SQL expressions, provides code examples for simple concatenations, aggregate calculations, and multi‑table integrations, and offers best‑practice guidelines to optimize performance and avoid common pitfalls.

@FormulaBackend DevelopmentHibernate
0 likes · 7 min read
Unlock Dynamic Fields in Hibernate: Master @Formula for Read‑Only Calculations
Programmer DD
Programmer DD
May 17, 2025 · Backend Development

Why Java Records Beat Lombok @Data: A Practical Migration Guide

This article examines the drawbacks of Lombok—such as reduced readability, IDE instability, and debugging challenges—and demonstrates how replacing Lombok annotations with Java Records, explicit constructors, and MapStruct for mapping yields cleaner, type‑safe, and maintainable code while eliminating boilerplate.

Java RecordsLombokRefactoring
0 likes · 5 min read
Why Java Records Beat Lombok @Data: A Practical Migration Guide
Programmer DD
Programmer DD
May 16, 2025 · Backend Development

Choosing the Right Real‑Time Web Technique: SSE, WebSocket or Long Polling?

This article compares three classic real‑time web technologies—Server‑Sent Events, WebSocket, and Long Polling—explaining their principles, Spring Boot implementations, advantages, disadvantages, and suitable scenarios to help developers select the optimal solution for live data updates.

SSESpring Bootbackend
0 likes · 6 min read
Choosing the Right Real‑Time Web Technique: SSE, WebSocket or Long Polling?
Programmer DD
Programmer DD
May 15, 2025 · Backend Development

Boost Spring Boot Performance 3× with JVM Tuning: Practical Parameters

After caching, indexing, and async optimizations still leave a Spring Boot REST API sluggish, this guide shows how fine‑tuning JVM options—such as enabling G1GC, adjusting pause targets, compressing class metadata, shrinking thread stacks, and pre‑touching memory—can triple response speed without changing application code.

G1GCJVMJava
0 likes · 7 min read
Boost Spring Boot Performance 3× with JVM Tuning: Practical Parameters
Programmer DD
Programmer DD
May 13, 2025 · Frontend Development

How I Built a Cross‑Platform Audio/Video App in Hours with AI‑Powered CodeBuddy

This article chronicles how a developer transformed the TransDuck audio‑video SaaS tool into a native desktop application using Tauri, Vue, and ffmpeg, while leveraging the AI‑driven CodeBuddy extension to automate project scaffolding, code generation, error fixing, and UI refinement, cutting development time from days to a few hours.

AI-assisted developmentFrontendTauri
0 likes · 10 min read
How I Built a Cross‑Platform Audio/Video App in Hours with AI‑Powered CodeBuddy