Dev.to

TL;DR Server-Sent Events SSE is a one-way streaming protocol from server → browser built on plain HTTP. The browser opens a connection with new EventSourceurl,...

Segmentation brief: 'all subscribers living within 5km of our Hanoi store.' Data Filter doesn't have a geo-radius option. Before jumping to SQL Query, check whe...

Logistics and distribution operators running Dynamics 365 Supply Chain Management increasingly need the product of live operational data: shipments tracked by G...

Author's Note: This article documents a production incident investigation and the technical findings that emerged from returning to foundational documentation....

Book: LLM Observability Pocket Guide: Picking the Right Tracing & Evals Tools for Your Team Also by me: Thinking in Go 2-book series — Complete Guide to Go Prog...

Kexa.io – Open-Source IT Security and Compliance Verification: The New Standard for Local AI Governance Enterprise adoption of Large Language Models is no longe...

Book: LLM Observability Pocket Guide: Picking the Right Tracing & Evals Tools for Your Team Also by me: Thinking in Go 2-book series — Complete Guide to Go Prog...

AI Is Too Expensive? I Run It for Free on My Laptop Here's How A medical student's guide to using AI without paying a cent in subscription fees. I remember the...

Most broken scrapers I see have the same shape: someone wrote the extraction logic first and the selectors second. The selectors were an afterthought — whatever...

The single most flake-prone test in any E2E suite is 'user signs up, I shipped AssertKit to remove that bridge entirely. The pitch in 8 lines of test code: impo...

Book: Decoupled PHP — Clean and Hexagonal Architecture for Applications That Outlive the Framework Also by me: Thinking in Go 2-book series — Complete Guide to...

When the books are wrong, the app doesn't crash. It just lies to you. That's what makes testing financial software different. Most bugs make noise. The app cras...

tl;dr — Agents are good at small fixes and terrible at 'make this algorithm better' because every change looks good in isolation and silently regresses elsewher...

Une nuit, deux audits, une même note Le 17 mai au soir, je termine la version 0.4.1 du Counterpart Toolkit et je décide de la soumettre à deux relectures extern...

One night, two audits, one identical score The evening of 17 May, I finish version 0.4.1 of the Counterpart Toolkit and decide to submit it to two external revi...

The agent had a list. I asked it to pick an item. It refused. Element not found Refresh. Same. So I opened DevTools and pasted in: document.querySelector'select...

Simply put, “The cloud is a way to use someone else’s powerful computers through the internet.” You might be thinking: “Wait… what do you mean by someone else’s...

While building a file conversion and sharing app, I needed a way to show users the status of their file processing. My initial thought was WebSockets. Realtime...

'LLMs collapse the boundary between data and control. Here's how to reconstruct separation before generative systems become un-auditable attack surfaces.” 'Once...

So, I came across an ad for this contest just after having come up with a 5 pillar constitution that I plugged into my Hermes agent. Immediately after receiving...

When Sundar Pichai dropped the words 'agentic Gemini era' at Google I/O 2026, everyone naturally fixated on the shiny consumer updates. We all stared at Gemini...

This is a submission for the GitHub Finish-Up-A-Thon Challenge I built a final-year project around Perovskite Solar Cell PSC simulation and analysis using SCAPS...

Cada vez que sale un CVE importante, alguien pega el vector CVSS en el chat del equipo y todos hacen como que lo entienden. Spoiler: la mayoría solo mira el núm...

HiyokoKit includes Android remote control via scrcpy. Launching and managing scrcpy from a Tauri app has specific challenges. scrcpy is an open-source tool that...

A merchant wants to experiment with design elements in the theme editor - button colors, font choices, border thickness, opacity. They're not comfortable editin...

Dataverse gives you three access-control primitives that combine into a permission model: business units BUs, security roles, and teams. On paper they are simpl...

Imagine a classroom in a remote village. There’s a blackboard, a few passionate teachers, and curious students. What’s missing? A high-end physics lab. Even mor...

What is Generative AI ? How it generates content? What is a model? 120b model means, equation has, 120 billion parameters. One of the commonly used model type i...

We benchmark import-next/no-cycle against eslint-plugin-import/no-cycle and oxlint's native Rust port on next.js 131K stars, 14,556 source files. The two ESLint...

Most ecommerce teams know when checkout conversion is down. Very few know why. That gap is expensive. You can have strong traffic, good product pages, healthy a...

Introducing Nova - A Deterministic C++ Logging Library With Domain-Based Routing Repository: https://github.com/kmac-13/nova/ https://github.com/kmac-13/nova/bl...

Most guides on OpenCode Go start with the models. I want to start with the thing most guides get wrong: the limits are denominated in dollars, not requests. Tha...

'Data Extension' is the generic term, but SFMC supports several DE types with different behaviors. Knowing the distinctions saves you from trying to send email...

A deal desk dashboard showed the running total of opportunities per account. Total amount per account was a rollup column. Users opened the dashboard, saw a tot...

Manufacturers running Dynamics 365 Supply Chain Management almost always also run a dedicated Manufacturing Execution System MES on the shop floor. Production o...

A client needs to expose a 'calculate the loyalty rebate for this customer' operation. It reads three Dataverse tables, applies some business rules, writes a re...

When I started working on my usability study project with KServe, I interacted with KServe users to understand the challenges they were experiencing while using...

DeepSeek V4-Pro Just Got 4x Cheaper. But Here's What Nobody's Talking About DeepSeek dropped a bombshell on May 22: the 75% discount on V4-Pro is now permanent....

This is a submission for the Gemma 4 Challenge: Write About Gemma 4 What exactly is Gemma 4? Simply put, it’s a family of open-weight, open-source AI models bui...

This is a submission for the Gemma 4 Challenge: Write About Gemma 4 A small test of using open models to expose uncertainty, not hide it. Most AI demos start wi...

Java Records have been stable since Java 16, and with Java 21 now the LTS baseline, they're showing up everywhere - DTOs, value objects, domain models. Immutabl...

This is where most tutorials stop. But if you try to use use with a promise created inside a Client Component, you will hit a subtle and frustrating bug. // Bug...

Originally published at thatdevpro.com. Part of ThatDevPro's open SEO + AI framework library. ThatDevPro is an SDVOSB-certified veteran-owned web + AI engineeri...

Originally published at thatdevpro.com. Part of ThatDevPro's open SEO + AI framework library. ThatDevPro is an SDVOSB-certified veteran-owned web + AI engineeri...

Where Does ReAct Hit a Wall? The previous article established ReAct's greedy strategy — each step looks at only the current state and decides the next action. T...

Introduction ai-engineering-from-scratch is a hardcore and comprehensive curriculum for AI engineering. Instead of just teaching you how to call the OpenAI API,...

In fintech, notifications are not a “nice-to-have” feature. They’re part of the product’s trust layer. If a user transfers money and doesn’t get a confirmation,...

For the past decade, data engineering was synonymous with distributed clusters. If your dataset exceeded a few gigabytes, standard practice dictated spinning up...