16979 posts from this source
The Problem If you've ever tried integrating the WhatsApp Business API for customer support, you know the pain: Meta's verification process, webhook configurat...
Open Graph Tags: The Small Thing That Can Save Your Website 🚑 You built a beautiful website. It’s fast ⚡, it’s clean ✨, it even scores 95+ on Lighthouse 🏆. Y...
markdown !Hero Bannerhttps://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazo...
TL;DR: There’s a namespace bug affecting Ubuntu 20.04, 22.04, and 24.04 servers that causes random service failures. It’s been reported since 2021 across system...
Introdução O PostgreSQL é um dos SGBDs mais usados na prática. Ele é robusto, confiável e oferece recursos avançados, como suporte a tipos de dados JSON e JSON...
Introduction Every fluctuation in the market is a test of a key price level. After a breakout occurs, the market almost always returns to test that breakout. T...
Overview Vulnerability ID: CVE-2026-27449 CVSS v3.1: 7.5 High Published: 2026-02-27 A critical access‑control failure has been identified in Umbraco Engage for...
Introduction This is a submission for the DEV Weekend Challenge: Community. I built this for Small and Medium Scale Enterprises SMEs, the silent engines of our...
Testing and Failure - A double top occurs when the market tests the same resistance previous high twice. - A double bottom occurs when the market tests the sam...
Introduction There are moments when a company does not just ship new features – it changes how it works internally to deliver a new era externally. That is exa...
Project Overview A project called Synthospeak proposes a protocol layer specifically designed for AI‑to‑AI interaction. Current AI systems typically communicat...
'Cleaned‑up Markdown
Background I’m writing this based on a Udemy course on Agentic AI, and I wanted to reflect on how AI evolved into what we now call agentic systems. Rule‑Based...
The Problem Tech hype is asymmetric. A single viral tweet can make a niche tool look dominant, while slow‑burning technologies that millions of developers are...
Overview Over the last few weeks I built a few small calculators as side projects: - BMI calculator - EMI calculator - Simple interest calculator Each was crea...
🚀 How I Discovered a Wash‑Traded Solana Token and Built a Scanner Last month I almost bought a Solana token that showed $2 M in daily volume. Everything looke...
This post is my submission for DEV Education Track: Build Multi‑Agent Systems with ADK. I built Dataguard, a multi‑agent pipeline designed to ensure data reliab...
Introduction Hello, my name is Samuel Okochi. I'm a Computer Science student who has just begun this journey. Why I Chose This Path I chose Computer Science be...
The Reusable Skill Revolution We've seen this pattern before. Developers used to write custom code for every single feature. Then npm changed everything—you co...
Overview Every time I shared a landing page for feedback, I got the same vague responses: - “Your headline could be clearer” - “Add more social proof” - “The C...
!DKistenevhttps://media2.dev.to/dynamic/image/width=50,height=50,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fus...
While contributing to Accuguide—an open‑source platform that helps people discover accessible places and services—I encountered an annoying bug: the browser ask...
Objective - Reverse a singly linked list in‑place. - The last node becomes the first. - All next pointers are reversed. - Return the new head of the reversed l...
Overview Most TikTok “automation” tools spin up a headless browser, route through a proxy, and hope the account isn’t banned within 48 hours. TokPortal takes a...
Introduction Stop obsessing over your “System Prompt.” Seriously. If your current AI strategy involves a library of 2,000‑word prompts designed to coax a speci...
markdown !Cover image for ShellSignal: A Terminal Dashboard for Developers Who Want the Signal, Not the Noisehttps://media2.dev.to/dynamic/image/width=1000,heig...
When you paste a URL into your DEV post, if it is embeddable you now get a handy tooltip that generates the liquid tag for you using a new universal embed tag:...
Overview OTP One‑Time Password autofill feels magical, but it’s actually a combination of OS‑level SMS parsing, app or browser integration, and strict security...
This is a submission for the Built with Google Gemini: Writing Challengehttps://dev.to/challenges/mlb-built-with-google-gemini-02-25-26 What I Built with Google...
The Community I built this for the amazing Open Source Developer Community on GitHub and DEV. From beginners learning to code to seasoned veterans pushing the...
I ship a lot of API/webhook integrations. Here’s how I make them NOT hurt in production 🔥 If you do freelance backend long enough, you notice a pattern: Client...
What is Dependency Injection? Dependency Injection DI is a design pattern that supplies a class with the objects it needs from the outside rather than creating...
Understanding What This Class Does Before jumping to Kotlin, let's break down what this Java class actually contains: - Two private fields codigo and nome that...
Introduction When I first built AllInOneTools, I thought the tools themselves were the most important part. I was wrong—the categories were. Why Categories Mat...
Drupal GPT-5.3 Codex Maintenance PoC is a small proof‑of‑concept that explores how an agent can assist with routine Drupal maintenance tasks. From its name, thi...
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Sizing a Real Off‑Grid System Most off‑grid solar guides are written by people trying to sell you a larger system than you need. This guide shows how to size a...
Blues legend Buddy Guy, at almost 90, absolutely rocked his Tiny Desk Concert with energy that’d make a youngster blush! This nine‑time Grammy winner and Rock a...
Content Strategy Review: Claude vs. Kimi I had Claude Opus 4.6 build a content strategy: six title rewrites and five new article themes, all data‑backed and lo...
Another Computer Science flipbook with a soundtrack! Last time we did a time traveling Action Movie with a cold openinghttps://dev.to/algorhymer/tales-of-the-al...
Security Headers Are Your First Line of Defense Security headers are your API's first line of defense. As of February 2026, proper header configuration can blo...
Introduction A virtual machine VM is a software‑based emulation of a physical computer that runs an operating system and applications using virtualized hardwar...
I've been working on Elixir Toolboxhttps://elixir-toolbox.dev/ quite a bit lately and wanted to share what's new: Updates - More categories: ~150 now, including...
Introduction As blockchain applications mature from experimental prototypes into production‑grade systems, performance and cost efficiency have become defining...
Anthropic’s Shift Away From Its Core Safety Promise Anthropic, founded with the mission to build AI systems aligned with human values, has long positioned itse...
Passkeys are no longer experimental. In 2026, they are: - Supported across major platforms - Backed by FIDO2 and WebAuthn - Positioned as phishing‑resistant aut...
!Cover image for Boost Your NestJS Observability with RedisXhttps://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3...
