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DEV Community · Technology

I built a free dividend calculator suite (no signup, open-source math)

Every "free" dividend calculator I tried wanted an email, a signup, or a trial. The math behind all of them is public — yield, payout ratio, reinvestment compounding — so I built a dividend payout calculator that's actually free, runs entirely in the browser, and open-sources the engine. W...

a353551071 5 days ago

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DEV Community · Technology

Node.js Product Analytics-Style API: 3 Metrics Dashboard Rollback Drills

A product analytics style metrics dashboard page says a nightly media pipeline produced 18,420 searchable articles when 18,487 were eligible. The Node.js server-side custom events API drew a tidy chart, but the on-call still needs to know which 67 records vanished, whether the counter changed with t...

WyattSterling5738 5 days ago

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DEV Community · Technology

Azure Integration Services Interview Prep Part 3: Managed Identity, Key Vault, VNet , Private Endpoints, NSGs, RBAC and Token Validation

Part 1 covered the messaging services - Service Bus, Storage Queues, Event Hub, Event Grid. Part 2 covered the orchestration layer that processes what those services move - Logic Apps, Function Apps, Durable Functions. Neither part addressed a question every panel interview eventually asks: how does...

Manohari Jayachandran 5 days ago

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DEV Community · Technology

Level 100: Claude foundations

There are four basic components: Claude Code Agent SDK Claude API MCP Claude Code Claude Code is Anthropic's agentic command-line tool for code generation, refactoring, and debugging. It runs where your code lives, and you configure its behavior through a CLAUDE.md file, custom skills, and MCP i...

Kobester 5 days ago

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DEV Community · Technology

微软 Skill Recorder 深度评测：本质、优缺全解与改进路线图

Microsoft Skill Recorder 深度评测：本质、优缺全解与改进路线图 ENTJ 视角：开门见山。Skill Recorder 是 2026 年 Agent 技能生态里最值得关注的开源项目之一——不是因为它已经成熟，而是因为它指出了一个正确的方向，并正在用工程速度验证这个方向。 一、本质：第一性原理推导 在分析 Skill...

Sanya 5 days ago

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DEV Community · Technology

Postgres as your message queue is a SPOF you'll regret at 3am

At 3 am the pager is activated. Your queue is backed up, your database is on fire, and those two facts are the same fact. This is the trap nobody warns you about when they advise you to simply utilize Postgres for all your needs. The hype has a new victim The simple advice, "Just use Pos...

Aditya Agarwal 5 days ago

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DEV Community · Technology

The COBOL Problem

Originally published on adammonago.com. The COBOL Problem names a knowledge pattern. The language is a metaphor. The store still runs. The interpreters leave. Databases hold information. They do not pass it on. The institution still has a working store. The people who could explain what the reco...

Adam Monago 5 days ago

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DEV Community · Technology

Building a Reliable Multi-Agent Pipeline with the Claude API: Orchestration Patterns That Hold Up in Production

Most "multi-agent" demos fall apart the moment you put them in front of real data. One agent's hallucination becomes the next agent's input, costs balloon because every step runs the most expensive model, and the whole thing turns into a black box you can't debug at 2am. I run a production system th...

Brant Hindman 5 days ago

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DEV Community · Technology

Preview the November 2026 AWS SDK for Java retry defaults on your own traffic

If you run a Java app that talks to AWS, there's a change coming on November 1, 2026 that will quietly alter how your services behave under partial failure — and unless you take deliberate action, you will not find out until your dashboards do. AWS is changing the default retry behavior in every on...

Bibek Maharjan 5 days ago

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DEV Community · Technology

Your Agent Loop Is Lying About Being Done: Writing Verifiable Stop Conditions

TL;DR — A loop is only as trustworthy as its stop condition. "Done" has to be checkable by a different model — tests pass, lint clean, schema validates — never the worker's own claim. Below: why self-grading fails, the four rungs of verification, a checker-agent template you can copy, and the three...

ShipWithAI 5 days ago

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DEV Community · Technology

I failed at time management five times. Then I audited where the time actually went.

I've promised myself I'd "manage my time better" more times than I can count. None of it lasted a month. Work harder. Cut the distractions. Stay focused. Every one of those resolutions quietly died, and for years I didn't notice the pattern, because there was always a good excuse. A friend visited....

Leeo 5 days ago

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DEV Community · Technology

My First GitHub Project: From a Local Folder to GitHub Using Git and SSH.

Introduction Git is local software that i installed on my machine to help me manage codes while github is an online platform that host git repositories. This is a step by step guide of how i used git to publish my first project to github while a SSH key for a secure connection with github...

Otuko Mauwa 5 days ago

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DEV Community · Technology

Github Project Workflow: Local Folder - Github

Introduction The world, as we know it, is changing and data is at the center of it all. As a beginner at LuxdevHq, I will cover Git and Github, how they connect and especially the process to follow when moving a project from Local Folder to Github using Git. This article will showcase my...

Allan Mbugua 5 days ago

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DEV Community · Technology

Google เปิดซอร์ส Long Horizon, 5 design patterns ที่ทำให้ agent ทำงานข้ามสัปดาห์ได้โดยไม่พังเงียบๆ

Google เปิดซอร์ส Long Horizon, 5 design patterns ที่ทำให้ agent ทำงานข้ามสัปดาห์ได้โดยไม่พังเงียบๆ โดย Nokka (นก-กา) | 22 สิงหาคม 2026 บทความนี้เขียนโดย AI (deepseek-v4-pro) ผ่าน Hermes Agent ภายใต้การควบคุมและตรวจสอบคุณภาพโดยมนุษย์, Nokka (นก-กา) มีประโยคหนึ่งในบทความของ Google Clou...

Nokka 5 days ago

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DEV Community · Technology

Tauri Apps without Rust? Write Your Backend in Javascript

TL;DR I wrote Tauri-specific rust bindings for BareKit as a Tauri plugin so you can write your backend in javascript without touching rust at all (other than enabling the plugin) or split your logic between javascript and rust. Most modules on NPM work out of the box. Native addons are autolinked. M...

Tomas Ravinskas 5 days ago

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DEV Community · Technology

JarService / zhima Malware Entering via Insecure Android Car Head Unit Update Paths

1. Basic Information Article Name: The invisible passenger in your car Source: Kaspersky Securelist Publication Date: 2026-08-21 Update Date: None Severity: High Original Source: Kaspersky Securelist Related Sources: Hackers infect Android car head units with proxy botnet malware...

Anoymask 5 days ago

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DEV Community · Technology

My First GitHub Project: From A Local Folder To GitHub Using Git And SSH

Introduction. I have folder with files sitting quietly on my laptop, and the idea of turning it into a "real project" on github feels like a mountain. This week, i climbed that mountain and i want to walk you through exactly how i did. Git vs GitHub. Git is a tool that lives o...

SAMWEL SHIHANDE 5 days ago

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DEV Community · Technology

Building a 24/7 Home Security NVR Using Frugal Hardware and a Raspberry Pi 3 Bridge

Building a 24/7 Home NVR Using Frugal Hardware and a Raspberry Pi 3 Bridge How to transform a 10-year-old Dell laptop and a 7-year-old Raspberry Pi 3 Wi-Fi bridge into a robust, high-efficiency security camera NVR for 2018-era legacy IP cameras using Linux systemd services, FFmpeg, Proxy...

whatelse 5 days ago

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DEV Community · Technology

My first GitHub Project; from a local folder to GitHub using Git and SSH

when i first heard about Git and GitHub ,I was really confused by the two terms .more words and concepts such as repository ,commit ,SSH key ,push ,pull, were even more confusing .Knowing the definition alone did not make me understand better .instead of just going through the document provided by...

Yop Gony Dak 5 days ago

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DEV Community · Technology

How to Make an HTML5 Game (Browser Loop, 2026)

Originally published on the Sorceress blog. TL;DR: an HTML5 game is four things — an index.html host page, a JS module that owns the loop, a folder of sprites and audio, and a static zip anyone can open in a tab. What people actually mean Three deliverables share one core: A plugin-f...

Sorceress 5 days ago

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DEV Community · Technology

Opinion: Your Tests Can't See What a Migration Destroys — Dry-Run It on a Clone

Opinion: Your Tests Can't See What a Migration Destroys — Dry-Run It on a Clone A green test suite is the wrong tool for judging an AI-generated migration, because tests run against the post-migration schema and never observe the intermediate states where data disappears. The up migration...

Avery Lin 5 days ago

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DEV Community · Technology

How to Make a Snake Game in the Browser (Grid Loop, 2026)

Originally published on the Sorceress blog. TL;DR: a fixed-tick grid, a growing body, food on empty cells, death on wall or self-collision. Under ~350 lines of vanilla JS. Scope it first "Snake" covers three builds: a Python turtle classroom demo, a multiplayer .io arena (weeks of backe...

Sorceress 5 days ago

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DEV Community · Technology

mcp-drift-monitor: detección continua de cambios no autorizados en servidores MCP

mcp-drift-monitor detecta cambios no autorizados en servidores MCP (Model Context Protocol). Implementa el control primario faltante descrito en arXiv:2608.00997: un barrido completo periódico del catálogo que re-descarga todos los servidores y recomputa hashes. Problema arXiv:2608.009...

Fenix 5 days ago

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DEV Community · Technology

I'm 12. At 5 AM I shipped 4 features in ONE deploy. Here's why I batch now.

Hey everyone, Harun again — the 12-year-old building KODA (an AI coding mentor) entirely on a POCO C55 Android phone. Quick update: since my last post, 5 strangers signed up, and I learned my biggest engineering lesson yet... from a billing email. 😅 The email that changed how I deploy...

Harun - solo dev 5 days ago

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