DEV Community • 2026-07-27 02:51

How to Stop Queued WhatsApp Replies After the 24-Hour Window Expires

A WhatsApp reply can be valid when an agent writes it and invalid when a queue worker finally sends it. Approval queues, retries, outages, and delayed jobs can all push a free-form reply beyond WhatsApp's 24-hour customer service window. Checking the window only in the UI is therefore not enough—the sender needs a server-side guard immediately before transport. This tutorial builds that guard wi...

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7m read
DEV Community • 2026-07-27 02:48

What Actually Happens Between "Export Gerbers" and a Physical PCB Showing Up at Your Door

If you've ever designed a board in KiCad, EasyEDA, or Altium, clicked "Export Gerbers," uploaded a zip file to a fab house, and then a couple weeks later a small padded envelope showed up with actual copper-and-fiberglass boards inside — you've probably wondered, at least once, what happens in between. What does a design file actually turn into on a factory floor, and why does it take days instead...

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5m read
Newest questions tagged javascript - Stack Overflow • 2026-07-27 02:43

How to drag and drop react. How to generate PDF from HTML React

I actually built an engine that calculates the A4 cut-sheet math automatically. Here is a video showing how it works: https://youtu.be/l9aXWqRSFCM?si=nEIaaqsxypmzCflm

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1m read
DEV Community • 2026-07-27 02:39

I built a PDF table checker that verifies arithmetic in any PDF without a template

The problem I kept running into: a financial report where a subtotal on page 8 is wrong, but nobody spots it until the numbers get aggregated into a spreadsheet and something doesn't reconcile. I wanted a tool that could ingest any PDF with tables and tell me which totals don't add up. The constraint: no template, no column mapping UI, no server. Every byte in the browser. What it does ...

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2m read
DEV Community • 2026-07-27 02:38

I built a client-side trade document validator — no upload, no server, just the browser

The problem I kept hitting: an international invoice with a line total that's off by a cent, or an HS code that appears in the commercial invoice but is absent from the packing list. Customs holds are rarely dramatic. They're usually paperwork. I wanted a tool that would catch these before the documents left the company. The constraint I set: nothing uploaded to a server. Every byte stays in the ...

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2m read
DEV Community • 2026-07-27 02:36

I Built a Job Search Agent That Scores 200 Jobs With Local AI -- Zero Cloud, Zero Cost

Job searching is tab hell. You open LinkedIn, Indeed, RemoteOK, Glassdoor. You re-read the same listings. You copy-paste the same cover letter. You pay $30/month for tools that just aggregate feeds and call it "AI-powered." I wanted something better. So I built JobRadar. What It Does JobRadar is a CLI tool that searches 8 job sources concurrently and scores every listing against your...

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3m read
DEV Community • 2026-07-27 02:35

The Distribution Gap Killing Early-Stage AI Startups.

Why shipping faster isn’t enough when nobody discovers your product. Every week, dozens of AI startups launch on Product Hunt, Hacker News, Reddit and X. Most disappear within days. Not because the product is bad. Not because the founders aren't talented. They disappear because they confuse launching with distribution. Building has become dramatically easier in the AI era. Getting noticed ha...

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3m read
Hacker News: Front Page • 2026-07-27 02:33

The old-school way of keeping the summer heat out of your home

Article URL: https://monocle.com/design/architecture/keeping-your-home-cool-without-air-conditioning/ Comments URL: https://news.ycombinator.com/item?id=49064588 Points: 12 # Comments: 13

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Experienced Devs • 2026-07-27 02:28

What’s a single piece of advice you’d give to newly promoted senior SWEs?

submitted by /u/Alces_ [link] [comments]

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1m read
DEV Community • 2026-07-27 02:25

Building TNP: Why I Built an Enterprise-Realistic DevOps Lab (Part 0)

🧭 This is Part 0 of a 10-part series documenting a self-built, enterprise-realistic DevOps lab — modeled after a fictional fintech company, not a pile of unrelated tools. TL;DR Most homelab tutorials teach tools in isolation. This series teaches them working together, inside a fictional company with real constraints. Meet TNP Technologies — a fictional fintech with 150 employees, hy...

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6m read
DEV Community • 2026-07-27 02:19

The $0.13 API Token: Inside the Underground Relay Market for AI Access

Here is a number that does not make sense: $3,333 worth of official Anthropic API credit, sold for 425 RMB. That is roughly $59. The buyer pays fifty-nine dollars and receives over three thousand dollars worth of API access to frontier models. The effective rate: about $0.13 of official usage per dollar spent -- a 97.8% discount off the list price. This is not a group-buy discount or a startup p...

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10m read
DEV Community • 2026-07-27 02:17

Is Building in Public Backwards?

I used to post the roadmap. The coming-soon screenshot, the "building something new" teaser, the thread narrating a feature I had not finished. It felt like momentum. Building in public, the advice everyone gives: share the journey, bring people along, market as you make. I stopped. Not because visibility is bad. I publish more now than I ever did. I stopped because I had the sequence backwards, ...

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3m read
DEV Community • 2026-07-27 02:16

TIL - Choosing Between Code, an LLM Call, and an AI Agent

Two questions sent me down this path. Question one: what is an "AI agent," really? Most job posts mention them. I had not looked into it deeply, and from the outside I could not tell what it referred to. Is an agent a different endpoint? A different model? A library we install? Or is it just a name for calling an LLM API in some particular way? Question two came later, and it stopped me cold. On...

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16m read
How Modern Voice-to-Voice AI Models Work
HackerNoon • 2026-07-27 02:15

How Modern Voice-to-Voice AI Models Work

A technical guide to how voice-to-voice AI handles speech encoding, audio tokens, streaming, turn-taking, latency, and evaluation.

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1m read
DEV Community • 2026-07-27 02:11

Auditing Agent Skills: A Threat Model for the Next Generation of AI Package Managers

Let me start with a question. If a stranger handed you a USB drive and said "plug this in, it just organizes your files," would you do it? Probably not. Most of us have had the "don't plug in random USB drives" lesson drilled into us for years. Here's the thing though: right now, thousands of developers are doing the exact digital equivalent of that, every single day, without even realizing it....

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9m read
It's really fascinating what Erik said in this post. I felt very identified with what he said. It's an amazing post that can guide people who are starting out or who even have years of experience in IT.
DEV Community • 2026-07-27 02:09

It's really fascinating what Erik said in this post. I felt very identified with what he said. It's an amazing post that can guide people who are starting out or who even have years of experience in IT.

Why Learning to Code is So Damn Hard Rachel Moser Rachel Moser ...

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1m read
Orchestrating a multi-agent solution with the Microsoft Agent Framework
DEV Community • 2026-07-27 02:09

Orchestrating a multi-agent solution with the Microsoft Agent Framework

The World Cup is over, and despite England losing in the semi-finals, there were plenty of successful hatewatches to be enjoyed (Thank you Belgium and Spain for your service). If you're sad that it's all over, the Premier League is just over 1 month away. Last season, my team Arsenal finally won the title after a 22-year drought. Arguably, we should have won the EFL Cup and the Champions League. ...

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28m read
Product Hunt — The best new products, every day • 2026-07-27 02:06

Comms

Launch iMessage agents in seconds Discussion | Link

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1m read
DEV Community • 2026-07-27 02:06

I let an AI write 6 WebGL hero sections — here's the one-CSS-variable reskin trick, and the honest review count

I've been building SDTK, a toolkit that puts real gates in front of AI-written code instead of trusting the first draft. To show what that actually buys, I pointed it at something visual and free: six "stop-scrolling" hero sections — a WebGL ember aurora, a floating 3D product, molten liquid metal, a particle swarm that spells your brand word, a scroll-driven film, and kinetic type. All six in mo...

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3m read
DEV Community • 2026-07-27 02:04

Connect Two WebRTC Peers with Manual Signaling

WebRTC does not define how two peers exchange connection details. Normally that job belongs to a WebSocket or HTTP signaling service. For debugging, copy and paste is enough: Device A: Offer + ICE -> invitation Device B: invitation -> Answer + ICE -> answer code Device A: apply answer -> connect Try it Open the manual signaling tester on both devices. Use HTTPS and...

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1m read
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