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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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Recent Articles

Latest from Programmer DD

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Programmer DD
Programmer DD
Dec 5, 2024 · Backend Development

Key Microservice Patterns: Service Discovery, API Gateways, Event‑Driven Architecture

This article consolidates a series of ByteMonk videos covering essential microservice architecture patterns—including service registration and discovery with Eureka, API gateway design, event‑driven architecture, service mesh, aggregator pattern, per‑service databases, bulkhead and strangler patterns, and monolith decomposition case studies—providing practical insights for building scalable, resilient systems.

API GatewayService Discoveryarchitecture patterns
0 likes · 7 min read
Key Microservice Patterns: Service Discovery, API Gateways, Event‑Driven Architecture
Programmer DD
Programmer DD
Dec 5, 2024 · Fundamentals

Why AI Isn’t a Silver Bullet: Core Software Design Principles Revealed

The article argues that despite AI’s recent breakthroughs, it cannot solve the inherent complexity of software development, and revisits classic software design principles—from modularity and code design to maintenance and performance—presented in John Ousterhout’s “Software Design Philosophy (2nd edition)” as essential guidance for developers.

AIagilecomplexity
0 likes · 9 min read
Why AI Isn’t a Silver Bullet: Core Software Design Principles Revealed
Programmer DD
Programmer DD
Nov 13, 2024 · Information Security

How I Stopped a Sudden CDN Traffic Surge with Quick Security Tweaks

After receiving unexpected CDN usage alerts, I investigated the spike, identified a malicious IP, and applied access‑control blacklists, anti‑leech settings, UA blocking, and usage‑cap limits, which instantly reduced bandwidth and traffic, illustrating effective CDN security measures.

CDNLog Analysisaccess-control
0 likes · 5 min read
How I Stopped a Sudden CDN Traffic Surge with Quick Security Tweaks
Programmer DD
Programmer DD
Nov 4, 2024 · R&D Management

Why Technical Architects Are the Missing Link in Modern Product Development

This article explains the pivotal role of technical architects in bridging business analysis, project execution, and architecture governance, introduces a triangular collaboration model to overcome information asymmetry, and presents a systematic 0→1→N thinking framework with practical methods for identifying key issues, decomposing complexity, and designing future‑proof, decoupled systems.

R&D managementTeam CollaborationTechnical Architecture
0 likes · 21 min read
Why Technical Architects Are the Missing Link in Modern Product Development
Programmer DD
Programmer DD
Oct 30, 2024 · Fundamentals

How Raft Elects a Leader and Replicates Logs: Step-by-Step Walkthrough

This article explains the Raft consensus algorithm's leader election, log replication, and log alignment processes using a three‑node cluster example, detailing heartbeat timeouts, RequestVote handling, AppendEntries messaging, and the iterative steps required to keep followers consistent with the leader.

AlgorithmLeader ElectionLog Replication
0 likes · 9 min read
How Raft Elects a Leader and Replicates Logs: Step-by-Step Walkthrough
Programmer DD
Programmer DD
Oct 30, 2024 · Fundamentals

Boost Your Java Coding Speed with IntelliJ IDEA Live Templates

Learn how to accelerate Java development in IntelliJ IDEA by using Live Templates to auto‑complete code snippets, create custom shortcuts, organize templates with groups, employ parameters, and share templates through import/export, turning repetitive typing into a few keystrokes.

IDE shortcutsIntelliJ IDEAJava
0 likes · 5 min read
Boost Your Java Coding Speed with IntelliJ IDEA Live Templates
Programmer DD
Programmer DD
Oct 23, 2024 · Artificial Intelligence

How to Build a Generative AI App with Ollama and Spring Boot

This guide walks you through setting up Ollama for local large‑model serving, creating a Spring Boot project with Spring AI support, writing a unit test to query the model, and explains how to add the necessary dependencies for AI integration in existing Java applications.

AI integrationGenerative AIJava
0 likes · 7 min read
How to Build a Generative AI App with Ollama and Spring Boot
Programmer DD
Programmer DD
Aug 29, 2024 · Backend Development

Tomcat vs Jetty vs Undertow: Which Spring Boot Embedded Server Performs Best?

This article builds a simple Spring Boot Greetings API, configures Maven profiles for Tomcat, Jetty, and Undertow, creates Docker images for each, runs load‑testing benchmarks across multiple concurrency levels, and analyzes startup time, CPU, memory, and response performance to determine the optimal embedded server.

DockerEmbedded ServerJetty
0 likes · 20 min read
Tomcat vs Jetty vs Undertow: Which Spring Boot Embedded Server Performs Best?