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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
Jul 24, 2024 · Databases

How We Cut Redis Costs by $460k Monthly: 10 Proven Optimization Strategies

In 2023, a TapTap infra team reduced Redis operating costs by 460,000 CNY per month through low‑cost ESSD instances, traffic compression, unused‑instance cleanup, TTL management, data migration, online compression, and targeted cleaning, detailing ten concrete measures and the open‑source tools that enabled zero‑downtime optimization.

Cost OptimizationDatabase Managementdata compression
0 likes · 17 min read
How We Cut Redis Costs by $460k Monthly: 10 Proven Optimization Strategies
Programmer DD
Programmer DD
Jul 24, 2024 · Databases

Designing a Google Calendar Clone: Step‑by‑Step Database Modeling Tutorial

This tutorial walks through designing a complete logical and physical database model for a Google Calendar clone, covering entities, attributes, relationships, handling all‑day and time events, recurrence rules, slots, and SQL table creation, while illustrating minimal‑modeling techniques.

Database DesignSQLcalendar app
0 likes · 41 min read
Designing a Google Calendar Clone: Step‑by‑Step Database Modeling Tutorial
Programmer DD
Programmer DD
Jul 19, 2024 · Cloud Native

How to Deploy Stirling PDF Locally with Docker – A Complete Guide

This article introduces the open‑source Stirling PDF web tool, explains its privacy‑friendly features, and provides step‑by‑step instructions for pulling the Docker image, configuring the container, and accessing the PDF processor locally.

DockerStirling PDFdeployment
0 likes · 4 min read
How to Deploy Stirling PDF Locally with Docker – A Complete Guide
Programmer DD
Programmer DD
Jul 18, 2024 · Fundamentals

Explore Cangjie – Huawei’s New Multi‑Paradigm Programming Language

This article introduces Huawei's newly announced Cangjie programming language, walks through a simple "Hello, Cangjie" program, explains its syntax and coding conventions, and highlights its native intelligence, high performance, strong security, and cross‑language interoperability features for modern software development.

CangjieTutoriallanguage
0 likes · 8 min read
Explore Cangjie – Huawei’s New Multi‑Paradigm Programming Language
Programmer DD
Programmer DD
Jul 12, 2024 · Backend Development

What’s New in VS Code for Java June 2024? Project Settings, Spring & Gradle Updates

The June 2024 VS Code for Java update introduces enhanced project settings with new compiler, Maven, and formatter tabs, easier access via the status bar, test coverage improvements, Gradle Build Server projects, Spring feature upgrades including @DependsOn support and Spring Boot 3.3 compatibility, and new extension packs for Java development.

Extension PackGradleJava
0 likes · 8 min read
What’s New in VS Code for Java June 2024? Project Settings, Spring & Gradle Updates
Programmer DD
Programmer DD
Jun 26, 2024 · Artificial Intelligence

Build a Java Chatbot with Spring AI and Alibaba Tongyi in 5 Minutes

This guide walks you through using Spring AI and Spring Cloud Alibaba AI to quickly create a Java chat application powered by Alibaba's Tongyi large‑model service, covering setup, configuration, core code, and verification steps for a functional generative AI chatbot.

Alibaba CloudChatbotGenerative AI
0 likes · 10 min read
Build a Java Chatbot with Spring AI and Alibaba Tongyi in 5 Minutes
Programmer DD
Programmer DD
Jun 21, 2024 · Backend Development

Build a Lightweight Java Logging System with Loki, Loki4j, and Grafana

Learn how to set up a simple yet powerful Java logging solution by installing Loki and Grafana via Docker, configuring Loki4j in a Spring Boot project, and visualizing logs in Grafana dashboards, with step‑by‑step instructions and essential code snippets.

DockerGrafanaJava
0 likes · 8 min read
Build a Lightweight Java Logging System with Loki, Loki4j, and Grafana
Programmer DD
Programmer DD
Jun 21, 2024 · Frontend Development

What Front‑End Engineers Must Know About Career Growth and Team Management

In this interview, veteran front‑end engineer Winter shares his journey, explains the true scope of front‑end work, discusses the engineering challenges of large‑scale products, outlines the programmer career ladder, and offers candid thoughts on team trust, work culture, and personal planning.

996Engineering ManagementFront-end
0 likes · 14 min read
What Front‑End Engineers Must Know About Career Growth and Team Management
Programmer DD
Programmer DD
Jun 4, 2024 · Backend Development

8 Essential Java Stream APIs to Simplify Collection Processing

This article introduces eight ready‑to‑use Java Stream APIs—including Stream.ofNullable, Stream.iterate, collectingAndThen, dropWhile/takeWhile, IntStream, teeing, concat, and partitioningBy—showing how each can cleanly handle nulls, generate sequences, transform collections, and combine streams with concise code examples.

CollectionsJavaJava 12
0 likes · 7 min read
8 Essential Java Stream APIs to Simplify Collection Processing