17795 posts from this source
The Concept: Metrics vs. Logs Metrics tell you there is a problem; logs tell you what the problem is. The Architecture - Loki The Library – runs on your laptop...
Offline‑first changes what “input validation” means Most apps validate only the HTML form you just submitted. A local‑first app has more input surfaces: - pers...
What is a MAC address? Every network interface on every device in the world has a MAC address. Your laptop, phone, smart fridge, printer — they all have at lea...
If you've ever stared at a string like 48 65 6C 6C 6F and thought “that’s probably text but I’m not decoding it in my head” — this guide is for you. Hex encodin...
Background For the last 2–3 days I didn’t write any blog post or update. Not because I stopped learning, but because I wasn’t learning a share‑worthy concept....
When I realized AI was influencing my thinking more than I intended, I didn’t pull back from it. I didn’t “use it less.” I did something more precise: I changed...
The Setup You know that feeling when you're triaging security findings and you see a bunch of mediums in the backlog? They'll get fixed eventually—probably—aft...
!Cover image for Building a Simple REST API with Express.js — The Right Wayhttps://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,form...
Modern Web Applications and Client‑Side Injections Modern web applications rely heavily on client‑side logic. Frameworks, third‑party SDKs, analytics tools, A/...
!Cover image for 🎫Beginner‑Friendly Guide 'Transformed Array' - Problem 3379 C++, Python, JavaScripthttps://media2.dev.to/dynamic/image/width=1000,height=420,f...
!Cover image for I mass applied whitespace to every project for 4 years. Here's what I got wrong about UI density.https://media2.dev.to/dynamic/image/width=1000...
This is my breakthrough journey, how I finally cracked one of the most head‑breaking pattern problems I’ve ever faced. text 1 2 3 8 9 4 7 6 5 Where My Brain Got...
I am a DevOps engineer. 🖥 For the last ten years, my home has been a construction site of physical servers, blinking racks, and the constant hum of cooling fan...
Introduction There was a time when I accepted AI outputs by default. Not blindly—but quickly. If something sounded reasonable and aligned with what I expected,...
Java programming language was initially developed to work on embedded systems, set‑top boxes, and television. By requirement, it was designed to run on varied p...
How AI Influences Priorities I thought I was using AI to execute faster. What I didn’t realize was that it was quietly shaping what I worked on in the first pl...
Some time ago, I was asked to maintain a Java application supposedly built around Clean Architecture. In reality… not so much. Almost every entity fell into one...
!Cover image for Fighting with json - a war storyhttps://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-...
Background In November 2025, my partner and I wanted to celebrate an anti‑baby‑shower—a satirical party to honor the fact that we’re intentionally childfree. T...
Introduction Over the past two years, most developers have interacted with AI through chat interfaces—prompt in, answer out. Useful and impressive, but fundame...
We’ve been experimenting with automating the “first month” of a web project—the tedious phase of setting up repos, configuring Tailwind, building basic componen...
Since I wasn't really happy with the current developer tools I found on the web, I just vibe‑coded a static site with the tools I usually use. It's simple and d...
Why PR hygiene matters - Keeps reviewers focused on one problem at a time - Makes rollbacks painless when something breaks - Creates a written trail of “why” d...
UUID Versions: v4 vs v7 – Which One Should You Use? UUIDs are everywhere: database primary keys, API request IDs, session tokens, distributed‑system identifier...
Everyone is building AI Agents. But almost nobody is securing them. We give them long‑term memory, access to APIs, and permission to execute code. Then we act...
Class Example: Car is a class. Different cars may have different names and brands, but all share common properties like four wheels, speed limit, and mileage....
When “Flexible” Becomes “Slow” 🇪🇸 Leer en Español You’ve seen it before: a report that worked perfectly in dev with 100 rows starts to “spin” for 5 minutes i...
Introduction A lot of system design conversations start with scale, but most systems will never reach that point. What they will face—sooner or later—is change...
Localization is rarely just translation. Once you support more than one language, every UI change needs extra care. Translators need context, placeholders must...
Linear algebra is the backbone of modern computing. GPUs utilize vector addition to calculate pixel positions and lighting for real‑time 3D rendering. Similarly...
Base64: What It Is, Why It Exists, and How to Use It You’ve seen it everywhere — in JWT tokens, data URIs, API responses, email attachments. That mysterious st...
Most articles about MVP costs give you useless ranges like “anywhere from $5,000 to $500,000.” That’s not helpful. Below is a practical breakdown based on 30+ M...
So I wrote one that unifies everything. I just wanted a simple API client. python import httpx async def fetch_useruser_id: str: async with httpx.AsyncClient as...
Systems will fail. People will make mistakes. Security isn’t about pretending otherwise. It’s about making sure failure is survivable. Good security design: - l...
Overview sandagent/sdk is a TypeScript/JavaScript SDK for running Claude agents in a sandboxed environment local or cloud. It exposes Vercel AI SDK‑compatible...
Ever opened an old project and thought, “Who made this mess?” … then realized you were the one? 😅 That’s what usually happens when folder structure is ignored....
Getting Started I bought my first 3D printer this week to make parts for the robot I'm building. The print head moves slowly, laying down each thin line of pla...
!Gábor Dombayhttps://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%2...
I was perfectly happy using Lazy Docker. It works. It’s stable. It does exactly what a Docker TUI should do. Then, after an irresponsible amount of caffeine, I...
Infinite renders are not magic bugs — they are deterministic feedback loops. Once you understand why a render retriggers itself, they become easy to reproduce,...
When I first learned JavaScript, concepts like currying felt confusing and unnecessary—until I actually started using it. What is Currying? Currying is a functi...
html The 'Smudge' Problem in Production Pipelines Your image processing pipeline works perfectly in the staging environment. You upload a few test shots, define...
The Rise and Limits of Conversational AI For the last few years, chatbots have been the face of artificial intelligence in business. They answer questions, sum...
32‑bit entry point asm .code32 32-bit mode entry32: Proper 32-bit segment initialization movw $gdt_data_segment - gdt_start, %ax movw %ax, %ds movw %ax, %es mo...
Introduction Short forms are supposed to make life easier—fewer fields, faster completion, better conversion. Tools like Short Form Builder make creating forms...
GDPR for Developers: What You Actually Need to Know Nobody gets into software engineering because they’re excited about data regulations. GDPR is one of those...
Introduction Large Language Models LLMs are no longer experimental tools; they are now core building blocks in production systems. The real challenge for devel...
A Research Finding Every AI Developer Should Pause Over > “A single compromised agent poisoned 87 % of downstream decision‑making within four hours in simulate...
