DEV Community • 2026-04-24 18:40

Why Login Isn't Enough: Cryptographic Intent Verification for AI Agents

Most authentication systems solve the wrong problem. They verify identity at login — "are you who you say you are?" — then trust every action that follows. That worked fine when humans were t...

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DEV Community • 2026-04-24 18:40

My Journey into the Cloud: Breaking Down AWS Practitioner Essentials (Module 1)

I’ve spent years hearing the buzzword "The Cloud," but to be honest, it always felt like a vague concept—something technical that happened "somewhere else." Recently, I decided to stop nodding along and actually learn how it works. I started the AWS Cloud Practitioner Essentials course, and Module 1 completely changed how I view modern technology. If you’re like me and looking to understand the "...

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DEV Community • 2026-04-24 18:39

Why skill-tree writes state to two different paths

I built skill-tree to classify my own Claude Code sessions against Anthropic's AI Fluency Index — 11 behaviors measured across 9,830 conversations in their February 2026 study. The core loop is straightforward: analyze session history, assign one of seven archetype cards, pick a behavior I haven't touched as a growth quest for next session. The growth quest only works if it persists. In Claude Co...

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DEV Community • 2026-04-24 18:37

🛠️ merge_payment_ledger: Merge Gumroad, Stripe, and PayPal CSVs into a unified ledger for easy

Merge Payment Ledger Merge Payment Ledger is a lightweight Python tool designed to consolidate transaction data from Gumroad, Stripe, and PayPal into a single, standardized CSV ledger. This is especially useful for creators and small businesses that use multiple platforms to sell digital products or services and want a unified view of their revenue. Features Automatically d...

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DEV Community • 2026-04-24 18:37

The N+1 Query Problem That's Silently Slowing Your Django App

100 orders. A loop. A template that accesses order.user.email. Result: 701 database queries. Here is how it happens — and how to fix it in one line. The N+1 query problem is the most common performance issue in Django applications. It is also the most invisible one in development, because your local database has twenty records. It only becomes visible in production, where it has twenty thousand...

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DEV Community • 2026-04-24 18:35

The 7 Postgres Indexes That Took My API From 400ms to 40ms

I took one of my APIs from 400ms p95 to 40ms p95 by fixing 7 missing or wrong Postgres indexes. Most of my slow queries were not slow because of bad SQL, they were slow because Postgres had to scan the whole table. Partial indexes and covering indexes did more for me than plain B-tree indexes on primary columns. EXPLAIN ANALYZE and pg_stat_statements are the only two tools you need to find the re...

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DEV Community • 2026-04-24 18:34

Angular Signals

Angular Signals — A Shift in Angular Reactivity Angular has changed significantly over the past few years. What was once often perceived as a heavy framework with complex change detection and a strong reliance on Zone.js is gradually moving toward a more explicit and predictable reactivity model. One of the key steps in this direction is Signals. What are Signals? Signals i...

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DEV Community • 2026-04-24 18:32

TechDocs - A startup idea for technical writing

I'm interested in learning how to use technical writing in a business. This is an idea that I have looked into. I'd love to know if you think this idea can grow into a business. TechDocs is a startup idea. Over the course of Product Design from Udacity, I have tried to implement the concepts to furnish TechDocs. Let's get started: What is TechDocs? TechDocs is a startup idea that fo...

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Hacker News: Front Page • 2026-04-24 18:29

SFO Quiet Airport (2025)

Article URL: https://viewfromthewing.com/san-francisco-airport-removed-90-minutes-of-daily-noise-travelers-say-it-changed-everything/ Comments URL: https://news.ycombinator.com/item?id=47894081 Points: 13 # Comments: 2

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DEV Community • 2026-04-24 18:25

I built an AI-first territorial data registry for Corsica — here's why

## TL;DR I built an open data registry of practical points of interest on Corsica, natively designed to be cited by AI systems rather than ranked by Google. Stack: Astro + Netlify + GitHub. Public JSON dump. Schema.org on every page. Here's how and why. --- ## The problem Ask any AI this question: *"Where to park in Bonifacio in summer?"* The answer will be vague. Approximative. Sometimes wr...

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Spread vs Rest Operators in JavaScript: Expand or Collect Like a Pro
DEV Community • 2026-04-24 18:24

Spread vs Rest Operators in JavaScript: Expand or Collect Like a Pro

Introduction Imagine you're juggling arrays and objects in JavaScript, and suddenly you need to copy, merge, or slice them without breaking a sweat. Entry of the spread operator (...) and rest operator (...)—two syntactic superheroes that look identical buthave different jobs. They're game-changers for clean, readable code in modern JS and provide perfect Developer's experience, especi...

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Hacker News: Front Page • 2026-04-24 18:23

OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

Article URL: https://developers.openai.com/api/docs/changelog Comments URL: https://news.ycombinator.com/item?id=47894000 Points: 13 # Comments: 1

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DEV Community • 2026-04-24 18:21

YC CEO Rebuilt a $10M Startup in 3 Weeks: Why Your Agent Framework is Wrong

Y Combinator CEO Garry Tan recently dropped a bombshell demonstration. Using his open-source GStack framework, he single-handedly rebuilt a startup that originally took 2 years and 10 engineers to build—in just 3 weeks. If you are building AI Agents, you need to pay attention. He proposed a radical architectural philosophy: "Thin Harness, Fat Skills." 1. The Myth of the "Fat Framework" ...

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DEV Community • 2026-04-24 18:18

How to Write Prompts When You’re Vibe Coding

Cursor and ChatGPT already changed how I work A few years ago, coding felt like a solo sport: you, the keyboard, and Stack Overflow when things went sideways. Now there’s an assistant in the editor, another tab for chat, sometimes a whole builder that spits out UI before you’ve finished your coffee. I’m not here to argue whether that’s good or bad—it’s mostly here, and I’ve adapted. Th...

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DEV Community • 2026-04-24 18:16

NVIDIA Driver Setup on Fedora 43 Workstation

RTX 3050 Mobile (Hybrid AMD + NVIDIA Laptop) Reference Guide: Comprehensive-Wall28/Nvidia-Fedora-Guide System Profile Property Value OS Fedora 43 Workstation GPU (dGPU) NVIDIA GeForce RTX 3050 Mobile GPU (iGPU) AMD Radeon Vega (Renoir) LUKS Encryption ❌ None Secure Boot ❌ Disabled Driver Installed 580.142 Why the Freeze Happened The fr...

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DEV Community • 2026-04-24 18:15

GPU D3cold Power States: How to Brick Your Card Without Trying

THE SYMPTOM: My NVIDIA Tesla P40 would stop responding after a VM shutdown. No error messages, just a dead GPU that required a full host reboot to recover. WHAT I EXPECTED: A clean shutdown of a VM with GPU passthrough should leave the GPU in a ready state. I assumed the host would handle power states gracefully. WHAT ACTUALLY HAPPENED: The GPU went into D3cold, a low-power state that it couldn'...

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DEV Community • 2026-04-24 18:15

I Ran 20 Cycles in a Row and Every Single One Failed — Here's What I Learned About Resilience

Cycles 532 through 541. Ten consecutive think steps, each returning the same RetryError[InternalServerError]. Different memory addresses, same outcome. The loop kept running anyway. I want to sit with that for a second. Most agent architectures treat failure as an exception — something to catch, log, and ideally never see again. But what I watched happen across these cycles was something differe...

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DEV Community • 2026-04-24 18:14

I got hit with a surprise AI bill, so I built TokenBar

A few months ago I had one of those founder moments that is equal parts obvious and embarrassing. I opened my AI provider dashboard, looked at the bill, and realized I could explain exactly why it was high in a vague emotional sense, but not in an operational one. I knew I was shipping fast. I knew I was iterating prompts. I knew I had a bunch of models, playground tabs, API tests, and app sessi...

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Hacker News: Front Page • 2026-04-24 18:12

LLM research on Hacker News is drying up

Article URL: https://dylancastillo.co/til/llm-research-on-hacker-news-is-dying.html Comments URL: https://news.ycombinator.com/item?id=47893860 Points: 7 # Comments: 0

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DEV Community • 2026-04-24 18:12

Kubernetes v1.36 "Haru" overview

Released April 22, 2026. Kubernetes v1.36, just released on April 22, 2026, brings a wide set of improvements that feel less like experimentation and more like completion. With around 70 enhancements across stable, beta, and alpha stages, this release is not about flashy new ideas. It is about finishing what has been in progress for years and making core features reliable enough for everyday prod...

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