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React Native Cross-Platform Development: One Codebase for Mobile, TV, and Beyond
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DEV Community · Technology

React Native Cross-Platform Development: One Codebase for Mobile, TV, and Beyond

Every article about React Native says the same thing: it lets you build iOS and Android apps from one codebase. That's true, but it's only half the story. I've spent 9+ years building cross-platform applications — not just for phones, but for Smart TVs, set-top boxes, and streaming platforms serving...

Aleksandr Sakov
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Beyond the Castle and Moat: Designing for a Zero Trust Future
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DEV Community · Technology

Beyond the Castle and Moat: Designing for a Zero Trust Future

What You'll Learn Understand the core principles of Zero Trust architecture and why traditional security models are failing. Identify key components and implementation strategies for a Zero Trust network. Explore practical considerations for adopting Zero Trust, including identity manage...

Matthew Gladding
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Beyond the Bytecode: Building a Python Interpreter in Python
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DEV Community · Technology

Beyond the Bytecode: Building a Python Interpreter in Python

What You'll Learn Understand the core components of a Python interpreter and how they interact. Explore the practical challenges and design considerations when implementing an interpreter in the same language it interprets. Gain insight into how interpreters translate human-readable code...

Matthew Gladding
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How I built a Stripe Webhook in Node.js (Full Guide)
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DEV Community · Technology

How I built a Stripe Webhook in Node.js (Full Guide)

How I Built a Stripe Webhook in Node.js (Full Guide) Webhooks are essential for handling asynchronous events in payment processing systems. In this deep dive, I'll show you how to build a production-grade Stripe webhook handler in Node.js with proper security, error handling, and idempote...

Apollo
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From CSV Import Demo to CSV Triage Console
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DEV Community · Technology

From CSV Import Demo to CSV Triage Console

Most CSV import examples stop at the same place: upload a file parse it validate a few fields insert rows That is enough for a demo. It is not enough for operations. In my earlier version, I already had a preview-first CSV intake flow with validation, normalization, row decisions, and an impor...

fastapier (Freelance Backend)
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From CSV Import Demo to CSV Triage Console
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DEV Community · Technology

From CSV Import Demo to CSV Triage Console

Most CSV import examples stop at the same place: upload a file parse it validate a few fields insert rows That is enough for a demo. It is not enough for operations. In my earlier version, I already had a preview-first CSV intake flow with validation, normalization, row decisions, and an impor...

fastapier (Freelance Backend)
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Your API is down — now what? Capturing failure context in Node.js
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DEV Community · Technology

Your API is down — now what? Capturing failure context in Node.js

Most monitoring tools tell you one thing "Your API is down." That's useful. But only partially. I wanted to go beyond "it's down" and understand why — specifically, where in the request lifecycle things actually broke. The frustrating part of debugging failures The first...

Riyon Sebastian
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Ataque a Trivy: 340 GB filtrados de la Comisión Europea en 2026
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DEV Community · Technology

Ataque a Trivy: 340 GB filtrados de la Comisión Europea en 2026

El ataque a Trivy que se hizo público a finales de marzo de 2026 es, probablemente, el incidente de cadena de suministro más irónico del año: la herramienta open-source que miles de equipos usan para detectar vulnerabilidades en contenedores, filesystems, repositorios y clústeres de Kubernetes termi...

lu1tr0n
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How Smart Model Routing Picks the Right AI for Your Programming Language
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DEV Community · Technology

How Smart Model Routing Picks the Right AI for Your Programming Language

The dirty secret of AI code review is that there is no single "best" model. There are only models that happen to be good at the specific thing you're asking them to do right now. I learned this the hard way while building 2ndOpinion, an AI code review tool where Claude, Codex, and Gemini cross-chec...

Brian Mello
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10 Claude Prompts for Developer Documentation That People Actually Read
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DEV Community · Technology

10 Claude Prompts for Developer Documentation That People Actually Read

Bad documentation is not a writing problem. It is a prioritization problem. Developers know what the code does. They wrote it. The issue is that explaining it to someone else — clearly, without assuming context, at the right level of detail — requires a different mode of thinking than building it d...

Dev Prompts
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Create Files in PowerShell: New-Item Explained
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DEV Community · Technology

Create Files in PowerShell: New-Item Explained

Create Files in PowerShell: New-Item Explained Creating files from the command line is faster than using Notepad. Learn the quick way. How It Works New-Item creates files when you specify -ItemType File. You can create empty files, or use Out-File to put content inside. This i...

arnostorg
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The AI Agent Memory Problem: Why Your Agent Keeps Forgetting
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DEV Community · Technology

The AI Agent Memory Problem: Why Your Agent Keeps Forgetting

You spent weeks building a smart AI agent. It reasons well, uses tools correctly, and gives great responses. Then a user comes back the next day and your agent has no idea who they are. This is the AI agent memory problem, and it is one of the biggest gaps between demo-quality agents and productio...

bluecolumn
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LangChain Memory Is Broken — Here's What to Use Instead
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DEV Community · Technology

LangChain Memory Is Broken — Here's What to Use Instead

If you have built anything with LangChain, you have probably run into the memory problem. You set up ConversationBufferMemory or ConversationSummaryMemory, it works fine in development, and then in production it either runs out of context window, loses history between sessions, or just behaves unpr...

bluecolumn
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Your Backend Is Leaking Secrets (Mine Was Too)
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DEV Community · Technology

Your Backend Is Leaking Secrets (Mine Was Too)

Ever had that feeling where your app works perfectly… but deep down you know it's kinda unsafe? Yeah — that was me. So I went all-in on fixing some serious backend security flaws in my project: 👉 BAR (Burn After Reading) — a secure file system with self-destruct capabilities. And honestly? This...

Rolan Lobo
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I Tried Self-Improvement for Years. Nothing Changed.
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DEV Community · Technology

I Tried Self-Improvement for Years. Nothing Changed.

I Tried Self-Improvement for Years. Nothing Changed. For years, I was into self-improvement. I read books. Watched videos. Listened to podcasts. Took notes. Tried new habits. Every time, it felt like I was making progress. But if I’m honest — nothing really changed. Not in a lasting w...

Lev Kazaryan
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Building a Multi-Language Pokémon Fansite with Next.js 16 (en/ja/ko/zh)
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DEV Community · Technology

Building a Multi-Language Pokémon Fansite with Next.js 16 (en/ja/ko/zh)

I recently launched Pokopia Habitats — a complete game guide for Pokémon Pokopia. Sharing the build because the multi-language static-site setup had a few non-obvious wins worth documenting. Stack Next.js 16 with App Router Static HTML Export (output: "export") — full SSG, no server...

Alex Chen
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What AI-Assisted Development Actually Looks Like in Two Years
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DEV Community · Technology

What AI-Assisted Development Actually Looks Like in Two Years

The pattern is consistent enough to make predictions. Not with certainty. With pattern recognition. Charity Majors said something worth taking seriously: "No one knows what AI-assisted software development will look like in two years. NO ONE. Anyone who says anything differently is selling somethin...

Brian Carpio
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Claude Opus 4.7 Is Here. Mythos Is Not. Here's the Difference.
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DEV Community · Technology

Claude Opus 4.7 Is Here. Mythos Is Not. Here's the Difference.

The update dropped. I still have ten hours left on my weekly Claude limit. That particular kind of suffering is hard to explain to non-AI people. But while I was watching the Opus 4.7 news roll in — and the Mythos news roll in even faster — I realised most coverage was either breathless hype or vag...

Can Ceylan
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Template Literals in JavaScript
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DEV Community · Technology

Template Literals in JavaScript

Modern JavaScript has introduced several features that improve code readability and developer experience. One such powerful feature is template literals, which provide a cleaner and more expressive way to work with strings. The primary goal of template literals, introduced in ES6 (2015), was to solv...

Sakshi Tambole
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SELinux AVC denied: stop guessing, start fixing
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DEV Community · Technology

SELinux AVC denied: stop guessing, start fixing

It happens more often than not. A web server gets installed, maybe a database, or perhaps a fresh Podman container. Settings are adjusted carefully, one by one. For testing, permissions shift to 777 — though never on live systems — yet somehow the error persists: Permission denied. There it is — bu...

Mattia Bandini
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