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24 Technologies that WhatsApp is Built with 🌱
DEV Community • 2026-04-20 05:01

24 Technologies that WhatsApp is Built with 🌱

With over two billion active users, WhatsApp is a masterclass in distributed systems engineering. To achieve massive concurrency and near-zero latency, the platform relies on a specialized stack that balances legacy reliability with bleeding-edge innovation. As a systems architect, I’ve analyzed the 24 essential components that allow this ecosystem to function seamlessly. 1. The Backend ...

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3m read
DEV Community • 2026-04-20 05:00

Redis Caching Strategies for Video Content Platforms

TrendVidStream serves trending video content from 8 regions: US, GB, CH, DK, AE, BE, CZ, FI. The Nordic and Central European regions trend quietly, while UAE can spike hard when regional events drive traffic. A flat TTL for all regions wastes quota on quiet regions and serves stale data to spiking ones. Redis lets us handle that heterogeneity cleanly. Current Stack vs Redis The platfo...

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4m read
DEV Community • 2026-04-20 05:00

If AI Finally Writes 90% of Code, You Don't Need to Learn So Many Languages

We no longer need to keep learning new programming languages. If AI writes 90% of our code, becoming a polyglot coder isn't valuable anymore. Here's what Gergely Orosz, from The Pragmatic Engineer, says in When AI Writes All Code, ...With AI writing most of the code, the advantage of knowing several languages will become less important when any engineer can jump into any codebase and ask the A...

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1m read
SqlGo🌱 - Save CO2 by optimizing queries and removing redundant storage
DEV Community • 2026-04-20 04:59

SqlGo🌱 - Save CO2 by optimizing queries and removing redundant storage

This is a submission for Weekend Challenge: Earth Day Edition What I Built The challenge was to built something that could celebrate our planet. And what better way to celebrate then try to save it! Introducing SqlGo, an SQL auditor which connects to your SnowFlake account, finds the historic executions of your query and with the help of Gemini, provides useful suggestions to optimize...

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4m read
Hacker News: Front Page • 2026-04-20 04:56

DIDs Are Cool. We Didn't Need Them

Article URL: https://www.inamoon.com/blog/dids-vs-subjects Comments URL: https://news.ycombinator.com/item?id=47830534 Points: 4 # Comments: 0

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1m read
Anthropic Cybersecurity Skills: 754 playbooks de seguridad para agentes IA
DEV Community • 2026-04-20 04:55

Anthropic Cybersecurity Skills: 754 playbooks de seguridad para agentes IA

Introducción Los agentes de IA saben escribir código, consultar documentación y buscar en la web, pero cuando se los pone frente a un volcado de memoria sospechoso, un alerta de SIEM disparándose a las tres de la mañana o una auditoría de Kubernetes con cincuenta namespaces, la mayoría falla de la misma forma: improvisan. Adivinan comandos, saltan pasos críticos y confunden técnicas q...

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10m read
7 Tools That Help You Review and Validate AI-Generated Code in Your Pipeline
DEV Community • 2026-04-20 04:53

7 Tools That Help You Review and Validate AI-Generated Code in Your Pipeline

AI coding assistants are fast. Code review is slow. The gap between those two speeds is where problems accumulate. These seven tools address different parts of the review and validation problem. Some run in CI, some at commit time, some in your editor. Together, they form a reasonable stack for teams that are shipping a meaningful share of AI-generated code and want systematic quality gates rathe...

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6m read
How to Set Up Pre-Commit Hooks for Teams Using AI Coding Assistants
DEV Community • 2026-04-20 04:52

How to Set Up Pre-Commit Hooks for Teams Using AI Coding Assistants

AI coding assistants write syntactically correct code most of the time. They are considerably less reliable about respecting your project's import conventions, naming patterns, or type contracts. That gap is exactly what pre-commit hooks close. This is a step-by-step guide to setting up pre-commit hooks for a team that uses AI coding tools. The setup applies to both Python and JavaScript/TypeScri...

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6m read
EarthPulse — Weekend Challenge: Earth Day Edition
DEV Community • 2026-04-20 04:50

EarthPulse — Weekend Challenge: Earth Day Edition

Somewhere on this planet, a forest that stood for a thousand years is gone. A sea that fed millions is dead. A city is breathing air that no government dashboard will tell you about. This is a submission for Weekend Challenge: Earth Day Edition What I Built Most of us only meet these places as a headline, a chart, or a number that scrolls away. I wanted one small surface where the har...

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3m read
Providers y Resources: Los Pilares de Infrastructure as Code
DEV Community • 2026-04-20 04:39

Providers y Resources: Los Pilares de Infrastructure as Code

El Problema Real Cuando trabajas con múltiples proveedores cloud (AWS, Azure, GCP) o herramientas (Kubernetes, GitHub), gestionar la infraestructura manualmente genera inconsistencias, errores humanos y documentación desactualizada. Necesitas un modelo declarativo que sea agnóstico y repetible. Qué Son Providers y Resources En el contexto de Infrastructure as Code, particula...

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2m read
Terraform: Infraestructura como CĂłdigo desde cero
DEV Community • 2026-04-20 04:36

Terraform: Infraestructura como CĂłdigo desde cero

El problema real Imaginá que necesitás desplegar una aplicación en la nube. Entrás a la consola de AWS, clickeás botones, creás instancias EC2, configurás security groups, levantás una base de datos RDS. Todo funciona. Pero mañana necesitás replicar exactamente lo mismo en otro ambiente. ¿Qué hacés? ¿Volvés a clickear todo? ¿Le pedís a un compañero que siga tus pasos? Ahí es donde Terra...

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3m read
I added 10 real developer testimonials to my UI library today — here’s what I learned from early users
DEV Community • 2026-04-20 04:30

I added 10 real developer testimonials to my UI library today — here’s what I learned from early users

Over the last few months I’ve been building Uilora, a component library focused on animation-first UI for modern web apps. Today I crossed a small milestone that felt bigger than I expected: I added 10 developer testimonials to the site. Not fake marketing quotes. Real feedback from people actually using the components. When I started this project I thought the hardest part would be building th...

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2m read
DEV Community • 2026-04-20 04:24

Arara Watch: a serverless global disaster monitor, developed with technology from Google Gemini, AWS, OpenWeather and NASA.

This is a submission for Weekend Challenge: Earth Day Edition What I Built For this Earth Day Challenge, I wanted to build something that bridges the gap between raw climate data and actionable human insight. When extreme weather events occur, raw numbers (like humidity percentages or temperature drops) aren't enough. People need context. I built Arara Watch, a Global Disaster Monitor...

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2m read
🌍 EarthTwin AI – See the Future You're Creating
DEV Community • 2026-04-20 04:24

🌍 EarthTwin AI – See the Future You're Creating

This is a submission for Weekend Challenge: Earth Day Edition 🚀 What I Built I built EarthTwin AI — a real-time, AI-powered simulation that shows how your daily lifestyle choices shape the future of our planet. Most tools tell you your carbon footprint. EarthTwin shows you what that actually means. It creates a living digital twin of Earth that evolves based on your habits. With ...

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2m read
DEV Community • 2026-04-20 04:22

I Inherited a 40,000-Line Java File. Here's What I Found Inside.

description: A developer's case study of inheriting and refactoring a 40,000-line Java Swing file in a production hospital system — without rewriting it. For six months, one application slowed down my work every single day. Every morning I'd open the hospital management system, wait for it to load, and mutter something unkind under my breath. My colleagues did the same. We blamed the database. W...

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6m read
DEV Community • 2026-04-20 04:21

4 Engineering Patterns That Cut AI Inference Costs 60–80% Without Touching Output Quality

One of the most common engineering problems I see when teams scale AI from pilot to production: the cloud bill is 5–10× what the pilot suggested it would be. This isn't a coincidence or a billing error. It's the predictable result of pilot conditions not reflecting production conditions — cleaner inputs, smaller volumes, no monitoring overhead, no retry logic, no agent orchestration multiplicatio...

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6m read
DEV Community • 2026-04-20 04:20

Building Bloom: How AI-Assisted Development Changed My Workflow

A 3-week journey building a production flower care app with Claude Code, Test-Driven Development, and GitHub Actions Introduction When my teammate and I set out to build Bloom—a cut flower care tracking app—we knew we wanted to do more than just write code. We wanted to master modern AI-assisted development workflows. Over three weeks, we built a production-grade Next.js application...

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5m read
DEV Community • 2026-04-20 04:20

Model Compression Techniques for Edge Deployment

Deploying machine learning models on edge devices, such as smartphones, IoT sensors, embedded systems, and microcontrollers requires careful optimization due to constraints in memory, compute power, latency, and energy consumption. Model compression is a critical set of techniques that reduce the size and computational requirements of models while preserving acceptable accuracy. This article expl...

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4m read
DEV Community • 2026-04-20 04:16

MQTT Broker Selection: HiveMQ vs Mosquitto for Industrial Use

I spent a month running both HiveMQ and Mosquitto in a production IoT setup with 2,500 endpoints. The difference between them wasn't in the marketing material , it was in the logs, the failed connections, and the way they handled message floods. HiveMQ had a clean dashboard and enterprise support. Mosquitto had a simpler config and less overhead. Neither was perfect. Both had gotchas that weren't ...

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4m read
Newest questions tagged javascript - Stack Overflow • 2026-04-20 04:15

Web page/app that stores data accessible from any device on LAN?

Using LiveServer in VS Code, I have setup an html page that I can access from any device on my LAN. On this app I have it set to store and read data using localStorage in javascript(typescript is what I type in). Where would I go from here in order to have the stored data be accessible from anyone accessing that page from anywhere in the LAN? I presume I will have to learn something entirely diffe...

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1m read
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