Morning.dev

DEV Community • 2026-08-22 08:20

[Aug 17-22] We Swapped GPUs, Then Kept Finding Blind Spots in Our Own Checks

A hardware verdict flipped twice in one week, two verification tools turned out to be quietly missing errors, and a real brokerage account needed two manual human interventions This is the English version of a post originally written in Korean for my algorithmic trading system devlog(new tab). It's been a while since the last devlog, and it turned out to be the busiest week yet. We swapped the G...

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4m read

DEV Community • 2026-08-22 08:20

[260817~0822] 그래픽카드를 바꾼 뒤, 검증 도구들의 허점을 연달아 잡았다

하드웨어 교체 판정이 한 주 동안 두 번 뒤집혔고, 자동 검증 도구 두 개가 조용히 오류를 놓치고 있었다는 게 드러났고, 실계좌에서는 사람이 두 번 직접 개입해야 했습니다 지난 개발일지 이후로 조금 뜸했는데, 그 사이가 오히려 가장 바빴던 한 주였습니다. 월요일엔 그래픽카드를 통째로 바꿨고, 그 판정이 며칠 사이 두 번 뒤집혔습니다. 같은 주에 새로 만든 검증 도구 두 개가 그동안 못 보고 지나치던 문제들을 잇달아 드러냈습니다. 그리고 실계좌에서는 사람이 두 번 직접 개입해야 하는 일이 있었습니다. 그래픽카드를 바꾸고, 판정이 두 번 뒤집혔다 월요일에 그래픽카드를 다른 브랜드 제품으로 교체했습니다. 계산 방식도 함께 바뀌는 큰 작업이었습니다. 화요일에 새 설정으로 정식 배포했는데,...

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3m read

DEV Community • 2026-08-22 08:17

Stop Guessing Which Model Is Better: Amazon Bedrock Model Evaluation Hands-On

"Which model should we use?" is the most common question in every Bedrock project — and most teams answer it by eyeballing a few responses. That doesn't scale, it isn't reproducible, and it silently expires every time a new model version ships. In this hands-on, we'll answer the question with data: Amazon Bedrock Model Evaluation, run in two modes — automatic metrics scored against reference answ...

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5m read

DEV Community • 2026-08-22 08:17

Checking whether an npm package "exists" stopped working

Every npm supply chain postmortem ends with the same advice: verify the package before you install it. So I looked at what the tools that do this actually check. Most of them check whether the package exists. That check is dead. Here are three package names documented as AI hallucinations, against the npm registry right now: react-codeshift HTTP 200 react-fetch-hook HTTP 200 unused-imports...

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5m read

DEV Community • 2026-08-22 08:15

Inside a 100-Page Course Platform: What This React/TypeScript Repo Reveals

A Lovable-Generated Giant This repo is a frontend for a course management platform, built with React 18, TypeScript, and Vite. It's not a small demo — it's a sprawling commercial site with 100+ source files, 40+ individual course pages, and a full commerce flow including a cart and Stripe payments. The README is the standard Lovable boilerplate, so the project's real purpose had to be i...

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4m read

DEV Community • 2026-08-22 08:13

Inside course-frontend: A Technical Teardown of a Lovable-Generated Training Marketplace

When you clone a repo and the README is a boilerplate welcome to Lovable, you know you're in for something interesting. Ganesh-1907/course-frontend is exactly that: a frontend for a course management platform, built fast with modern tooling, and carrying the fingerprints of AI-assisted generation. This teardown looks at what it does, how it's put together, and the trade-offs baked into its code. ...

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How to Get the Parent Domain from a Cross-Origin Iframe in JavaScript (Without Losing Your Sanity)

DEV Community • 2026-08-22 08:11

How to Get the Parent Domain from a Cross-Origin Iframe in JavaScript (Without Losing Your Sanity)

1. Introduction If you are developing an iframe-based widget, embedded tool, or third-party script, you will inevitably run into a question that sounds deceptively simple: "Which website embedded my iframe?" Knowing the parent domain is essential for domain authorization, analytics, and security origin checks. But here is the catch: modern web browsers trust nobody — especially not ...

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7m read

Trump pledged support for fossil fuels. Now his war in Iran is fast-tracking renewables

newest submissions : multi • 2026-08-22 08:10

Trump pledged support for fossil fuels. Now his war in Iran is fast-tracking renewables

submitted by /u/Naderium to r/worldnews [link] [comments]

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Hacker News • 2026-08-22 08:08

Show HN: Agile AI Development Lifecycle

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DEV Community • 2026-08-22 08:08

How to record Google Meet and Zoom calls with dual audio using the HTML5 MediaRecorder API

Recording virtual meetings like Google Meet or Zoom often comes with annoying hurdles: 5-minute freemium limits, forced software installations, or needing explicit host permission just to record local audio. In this guide, we'll walk through how to build a browser-native screen recorder using the HTML5 MediaRecorder API and getDisplayMedia to capture both tab audio (meeting participants) and user...

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2m read

𝚓𝚊𝚟𝚊𝚜𝚌𝚛𝚒𝚙𝚝 • 2026-08-22 08:05

LilScript makes js modules 20% smaller

LilScript is a typed, compression-first language that compiles into js and sometimes into exec(will be more stable in future). The compiler mangles, reshapes the program into optimized js that happens to be 5-40% smaller (after gzip/br compression or raw) compared to the best performing JS toolchains like oxc/esbuild/terser/.. What has been proven to work with LilScript? makes VSCode's core js mo...

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3m read

DEV Community • 2026-08-22 08:05

My screener recommended every job it could not read

This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry. Project Overview Today I wrote a screener for a freelance job board. One category alone holds ~800 open postings, most of which I can rule out from the text: the ones that require a video interview, the ones restricted by age or gender, the ones that want your personal anecdotes, and — the one that act...

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Flavio Copes • 2026-08-22 08:00

A deep dive into Grok Bot

A detailed Grok Bot guide covering setup, persistent computers, skills, routines, approvals, real use cases, limits, pricing, and alternatives.

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DEV Community • 2026-08-22 07:53

How to Validate Crypto Wallet Addresses Offline in Java

Crypto address validation is one of those small backend features that becomes important very quickly. If you are building a wallet, exchange flow, payment form, fintech dashboard, or internal operations tool, you usually want to reject clearly invalid addresses before anything touches an RPC node, explorer API, queue, or withdrawal system. This tutorial shows how to validate crypto wallet addres...

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5m read

DEV Community • 2026-08-22 07:53

Automatic HTTPS on Kestrel in 2026, now that LettuceEncrypt is archived

If you run an ASP.NET Core app directly on Kestrel, with no nginx or cloud load balancer in front, getting a real TLS certificate has always been the awkward part. For years the answer was LettuceEncrypt, which obtained and renewed a Let's Encrypt certificate inside your app. That project was archived in April 2025, and its last release targets .NET 6. So the question is open again: how do you do ...

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2m read

DEV Community • 2026-08-22 07:52

LLM Routing with Zero Code: Content-Based Model Selection on Bedrock with Step Functions

Sending every request to your biggest model is the easiest way to burn a Bedrock budget — a "what's the capital of Japan?" question doesn't need the same model as "write FizzBuzz in Python". The usual fix is a router Lambda, but that means code to write, deploy, and maintain. In this hands-on, we'll build content-based model routing with zero application code: an AWS Step Functions state machine ...

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5m read

DEV Community • 2026-08-22 07:51

skillvet: scan AI agent skills before you run them

skillvet: scan AI agent skills before you run them You dropped a random SKILL.md folder into your agent and trusted it with your shell. It has the same access you do: network, ~/.ssh, every env token. Most of the time it is fine. Most of the time. skillvet is a one-command supply-chain scanner for AI agent skills and MCP servers. It reads the tree, does not execute it, and prints a RED...

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‘They’re thinking about the likes’: deadly TikTok motorway trend horrifies Ireland

newest submissions : multi • 2026-08-22 07:49

‘They’re thinking about the likes’: deadly TikTok motorway trend horrifies Ireland

submitted by /u/Free-Monkee to r/technology [link] [comments]

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DEV Community • 2026-08-22 07:49

How to fix punctuation in speech-to-text and LLM output without calling a model

If you've ever wired up the Web Speech API and rendered the result straight to the page, you've seen this: const recognition = new (window.SpeechRecognition || window.webkitSpeechRecognition)() recognition.lang = 'en-US' recognition.onresult = (event) => { const transcript = event.results[0][0].transcript console.log(transcript) // 'can you send me the report' } recognition.start(...

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6m read

DEV Community • 2026-08-22 07:49

The Developer Career Playbook: Build a Future That Outlasts Any Framework

The tech job market in 2026 looks nothing like it did five years ago. Entry-level hiring at major tech companies has dropped roughly 65 percent compared to 2019 levels, while senior and staff-level roles are growing as a share of total hiring . If you're a developer right now, that's not a reason to panic — it's a reason to get strategic. Here's what the data actually tells us, and more important...

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6m read