Morning.dev

DEV Community • 2026-07-29 09:15

Stop Defaulting to LRU: How I Built a 15.5M ops/sec S3-FIFO Cache for Node.js by Hacking V8

Whenever we need an in-memory cache in Node.js, 99% of us do the exact same thing: npm install lru-cache. It’s muscle memory. LRU (Least Recently Used) has been the industry standard for decades, and for good reason—it’s intuitive and it works. But if you are running a high-throughput backend, relying on LRU might be quietly bottlenecking your performance and degrading your cache hit ratios. Recen...

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Hacker News • 2026-07-29 09:13

Show HN: Skewrun – fix Kerberos clock skew per-process, no root (open source)

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DEV Community • 2026-07-29 09:13

Looking for 3 tiny first PRs around WordPress/Gutenberg image placement

Pictovap is looking for 3 tiny first PRs around WordPress/Gutenberg image placement. No API keys, no live WordPress site, no private article content. Good fit if you know Python, WordPress blocks, Markdown publishing, CMS automation, or image metadata. Start here: https://github.com/yoldaolmak/Pictovap/discussions/61

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DEV Community • 2026-07-29 09:12

Magento 2 MySQL Read/Write Replication Splitting: Scale Your Database Horizontally

When your Magento 2 store outgrows a single database server, the first wall you hit isn't CPU or memory — it's connection contention. MySQL can only handle so many concurrent connections before query latency spikes, transactions queue up, and your store grinds to a crawl. The standard production fix is read/write replication splitting: offload SELECT queries to replica databases while writes go t...

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DEV Community • 2026-07-29 09:10

How Usage-Based Pricing Shifts Risk From Vendor to Customer

Usage-based pricing, paying based on actual consumption, API calls, compute time, data processed, rather than a flat seat or tier fee, has become increasingly common in SaaS, particularly for infrastructure and AI-related products. It's often presented as a more fair and efficient pricing model, since customers pay in proportion to actual value received rather than a flat fee regardless of usage. ...

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DEV Community • 2026-07-29 09:08

AI Can Generate a Test Suite. That Does Not Mean You Have One.

Generating browser tests with AI has become almost comically easy. You paste a requirement into Claude, ChatGPT, Copilot, or another coding assistant. A few seconds later, you have a folder full of Playwright tests, fixtures, page objects, and configuration files. The tests may even pass. This creates a dangerous moment because the output looks much closer to a finished system than it really is...

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DEV Community • 2026-07-29 09:08

When Database Read Replicas Introduce More Problems Than They Solve

Read replicas are a standard scaling technique: route read-heavy traffic to one or more replica databases, kept in sync with a primary, freeing the primary to handle writes with less contention. The pattern is well understood and genuinely valuable for the right workloads. It's also frequently adopted as a default scaling step before the specific problems it introduces, primarily around replicatio...

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DEV Community • 2026-07-29 09:05

Why I moved coding-agent work out of the terminal

At some point, I noticed that I had stopped closing terminal tabs. One had an agent halfway through a feature. Another contained a useful investigation I didn’t want to lose. A third was waiting for me to answer a question. I kept them all open because each tab held a piece of project state that existed nowhere else. The terminal had quietly become my filing system. I like coding agents, and I’...

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DEV Community • 2026-07-29 09:04

BenchmarkGate, Part 2: Why a Baseline Isn't Enough

In part one, I introduced BenchmarkGate — a local-first performance regression gate for BenchmarkDotNet. v0.1.0-alpha.1 could do one thing: compare a benchmark's mean time against a committed baseline, using a single global threshold passed on the command line. That was enough to catch a regression. It wasn't enough to trust the tool. v0.2.0-alpha.1 is live now, and this is the part of the story...

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Hacker News: Front Page • 2026-07-29 09:03

ChatGPT claims rogue AI attacked more companies

Article URL: https://www.bbc.co.uk/news/articles/c2el319vzr3o Comments URL: https://news.ycombinator.com/item?id=49094996 Points: 12 # Comments: 0

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DEV Community • 2026-07-29 09:02

EU AI Act Enforcement Starts August 2. Who's Governing Your Agents?

EU AI Act Enforcement Starts August 2. Who's Governing Your Agents? By Empire Labs Security Division Published: August 2, 2026 TL;DR — The EU AI Act's high-risk provisions activate today. They weren't written for autonomous AI agents. But your agents are subject to them anyway. Here's what you need to know, what you need to prove, and how credential-brokered enforcement bridges the ...

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DEV Community • 2026-07-29 09:01

Flux 3 AI: Building a Resilient Multi-Model Video Workbench

AI video products look simple from the outside: a prompt box, a Generate button, and a result. The implementation becomes much more complicated as soon as multiple models, reference images, different aspect ratios, asynchronous jobs, credit costs, and failures enter the picture. While building Flux 3 AI, I wanted the user-facing workflow to stay consistent even when the underlying model capabilit...

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DEV Community • 2026-07-29 09:00

Built, not assembled

Most cloud platforms are not platforms. They are holding companies. A database startup gets acquired. A serverless product gets bolted on. An AI inference layer arrives via partnership. Storage, auth, CDN -- each built by a different team, on different assumptions, with different data models. They get unified at exactly one layer: billing. You get one invoice. Underneath, six systems that do not ...

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DEV Community • 2026-07-29 09:00

Wrapping Go errors: where, and mostly why

Mid-review on an order confirmation mailer, I confidently explained that the right call is to wrap an error once, at the package boundary, not at every internal step. The functions that build the message stay silent, only the public function that sends the email adds useful context. I even quoted Dave Cheney to back it up. Except while researching this article, I found out Dave Cheney changed his ...

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Flavio Copes • 2026-07-29 09:00

Tauri tutorial: build a desktop app with web technologies

Build a Tauri 2 desktop notes app with HTML, CSS, JavaScript, a Rust command, local file storage, permissions, development, and packaging.

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Public PoC Released for Exploited Check Point SmartConsole Authentication Bypass

The Hacker News • 2026-07-29 08:58

Public PoC Released for Exploited Check Point SmartConsole Authentication Bypass

Cybersecurity researchers have shared additional technical details about a recently patched critical security flaw impacting Check Point Security Management Server and Multi-Domain Security Management Server (MDS) that has come under active exploitation in the wild. The vulnerability, tracked as CVE-2026-16232 (CVSS score: 9.3), is an authentication bypass in the SmartConsole login process that

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Hacker News: Front Page • 2026-07-29 08:53

The Shape of Data (2022)

Article URL: https://www.scattered-thoughts.net/writing/the-shape-of-data/ Comments URL: https://news.ycombinator.com/item?id=49094931 Points: 3 # Comments: 0

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DEV Community • 2026-07-29 08:50

LoopTroop v0.4 is out + just hit 100 GitHub stars! A local-first AI coding orchestrator that turns tickets into real PRs

Hey everyone! The first 100 stars are always the hardest, so I wanted to share a big milestone and launch update. I just released LoopTroop v0.4! What is LoopTroop? LoopTroop is a free, open-source, local-first GUI designed to eliminate "endless chat drift" in AI coding assistants. Instead of unstructured back-and-forth chat, it breaks complex software tasks into planned task beads, automated rec...

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DEV Community • 2026-07-29 08:50

Your scraper isn't broken. The site changed, and it didn't tell you.

The scraper had been green for eleven weeks. Every run exited 0, every run wrote rows to the warehouse, the dashboard showed a healthy line. Then someone in the pricing team asked why 40% of products suddenly had no price. They'd been shipping decisions on that data for most of a week. Nothing had failed. That's the whole problem. The site had quietly moved the price into a different element duri...

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DEV Community • 2026-07-29 08:47

You reach for Sass to mix colors. `color-mix()` does it natively.

Every design system has this pattern: one brand color, eight shade variants, a slightly darkened hover state, and a lightened disabled state. For years, CSS had no way to produce those programmatically. You either committed all twelve values by hand or you pulled in Sass for its darken(), lighten(), and mix() functions. color-mix() is the native CSS answer. It has been in every major browser sinc...

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