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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

Sep 26, 2025 · Backend Development

Spring Boot 4 & Spring Framework 7: Key Features, Code Samples, and Upgrade Guide

This article reviews the major enhancements in Spring Boot 4 and Spring Framework 7, covering baseline requirements, performance boosts, native image support, modularization, new annotations, API versioning, declarative HTTP clients, resilient method support, multiple TaskDecorators, and null‑safety improvements, with practical code examples to help developers plan their migration.

API VersioningCloud NativeMicroservices

0 likes · 19 min read

Spring Boot 4 & Spring Framework 7: Key Features, Code Samples, and Upgrade Guide

Programmer DD

Sep 19, 2025 · Artificial Intelligence

How AI is Redefining Design and Development: Key Takeaways from CodeBuddy Meetup

At the recent CodeBuddy developer meetup, Vibe Coding’s design and product leads highlighted how AI reshapes design workflows and expands developer skill sets, while practitioners shared practical experiences with AI‑driven CLI tools, cloud integration, and the preference for Claude models in AI coding.

AICLIClaude

0 likes · 5 min read

How AI is Redefining Design and Development: Key Takeaways from CodeBuddy Meetup

Programmer DD

Aug 29, 2025 · Artificial Intelligence

Will AI Replace Young Workers? Six Surprising Findings from a Stanford Study

A recent Stanford study of ADP payroll data reveals that AI is already reducing employment rates for early‑career workers aged 22‑25 in high‑exposure jobs, while older employees see gains, and highlights that AI that augments rather than automates work may not cut entry‑level positions.

AI ImpactArtificial IntelligenceStanford Study

0 likes · 4 min read

Will AI Replace Young Workers? Six Surprising Findings from a Stanford Study

Programmer DD

Aug 19, 2025 · Backend Development

What’s New in Spring Boot 4? Explore the Latest Features and Enhancements

Spring Boot 4, built on Spring Framework 7, introduces elegant API versioning, streamlined Bean registration, null‑safety annotations, simplified HTTP proxy creation, upgraded SPEL, GraalVM native support, Jackson 3.x, newer Servlet/WebSocket versions, and numerous other enhancements, offering developers more powerful and convenient tools.

Bean RegistrationJavaSpring Boot

0 likes · 8 min read

What’s New in Spring Boot 4? Explore the Latest Features and Enhancements

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

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

Jun 4, 2025 · Artificial Intelligence

Build a Wine Quality Predictor with Tribuo: Java’s Production‑Ready ML Library

This tutorial walks Java developers through using Oracle’s Tribuo library to load the UCI wine‑quality dataset, train a regression model with CART‑based random forests, evaluate its performance, save the model, and later load it for predicting wine quality scores.

Java MLMachine LearningTribuo

0 likes · 11 min read

Build a Wine Quality Predictor with Tribuo: Java’s Production‑Ready ML Library

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

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

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