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Standalone Feature Flag APIs โ Safer Notification Delivery for Startup Applications
Short answer: use a standalone feature flag API when a startup needs low-friction release toggles and rollout controls, while keeping product analytics separate; use PostHog when flag evaluation and experiment results need to live beside product behavior.For a property-management notification service, the practical target is narrower than "choose a feature-flag platform." A new delivery path must be turned on gradually, and a bad release must be stopped without redeploying. At the same time, the
Show HN: Sunk Cost โ How long until a local LLM rig pays for itself?
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Your config-overrides.js is dead if Docker runs react-scripts
Our web app's frontend had a file called config-overrides.js with three build speedups in it: thread-loader, cache-loader and HardSourceWebpackPlugin. None of them had ever run.I found this in a Cursor session where I asked the obvious question: how do we make the React build faster? The file looked like someone had already done the work, so I had been treating the build as tuned. It wasn't. It was a stock Create React App build with a file sitting next to it that did nothing. react-scripts
React Hooks Explained: useState and useEffect in Depth
Originally published at adityarawas.inReact Hooks, introduced in React 16.8, changed how we write components. Before hooks, state and lifecycle logic required class components. Now, useState and useEffect let you add the same capabilities to simple functions.This guide covers both hooks deeply โ how they work under the hood, when to use them, and the subtle bugs that trip up even experienced React developers. What Are Hooks?Hooks are functions that let you "hook into" React's internal state
Architectural Breakdown: Empty Is Not a State
Empty Is Not a State: Hardened Architecture Audit What Broke in Production (Or Would Have, If We'd Deployed It)The original draft looked fine on paper. That is the problem with papers. Five silent failures waited to detonate once traffic hit the wall:Bug 1: PollStats.snapshot() does not exist. Line 230 calls self._stats.snapshot(). The class never defined one. Every metrics read exploded with AttributeError. Whatever Prometheus dashboards were supposed to show yielded nothing. A clean
Debugging Minified JavaScript Production Errors in React and Next.js
JavaScript production errors happen inside minified React and Next.js bundles, so a media team's AI agent can report latency and cost perfectly while its control room shows only an unreadable app.js:1:48392 stack. Those are different observability problems, with different data boundaries.Short answer: JavaScript production errors remain trackable, but minification rewrites names and locations; without source map reverse lookup, an error tracker stores bundled positions rather than the original R
Show HN: Macros with a Behringer FCB1010 MIDI Pedalboard in macOS
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Zustand vs Redux: The Zombie Child Problem Nobody Talks About (And Why Zustand Wins)
If you've been in the React ecosystem for more than five minutes, you've heard the debate: Zustand vs Redux.Most comparisons stop at "Zustand is simpler" or "Redux is more powerful" But there's a deeper, more interesting reason why Zustand has been gaining so much traction โ and it has nothing to do with bundle size or boilerplate.It has to do with zombie children.Let me explain. What Is the "Zombie Child" Problem?A Zombie Child is a component that should be dead (unmounted), but continues
I got tired of inventing i18n keys, so the source
Most i18n setups ask you to name a string before you have finished writing it.You invent pricing.hero.title, open a JSON file, wire a lookup, then finally type the sentence. Multiply that by a few thousand UI strings and naming becomes the work.I got tired of that, so I built the opposite habit into the toolchain:Write the sentence where it belongs. Wrap it in double brackets. Let the tool derive the ID.That tool is bracket-i18n. This post is a short record of the idea โ not a feature tour.
How to Find the Meaning of Life in 26 Seconds
I typed โThe meaning of lifeโ into a browser and, 25.7 seconds later, it answeredThe fine game of nilNot quite philosophy, perhapsโbut it is an exact anagram. Every letter in the original appears once in the result.The page had evaluated 222,534 exact combinations, retained the strongest 1,200 phrases, and ranked that one first. Four workers were exploring about 36,000 branches per second, all inside the browser.That experiment became Anagram Architect, a phrase-anagram generator I built with Ru
bro.js v2.4.0 - Redis clustering, API key rotation, and a rate limiter that actually survives outages
Pushed v2.4.0 of bro.js (my zero-boilerplate Express alternative) and figured I'd write up what changed instead of just dumping a changelog. The Redis integration got a lot less annoyingUsed to be you had to wire up your own Redis client and babysit connection state. Now you just drop a redisUrl in the config and most of it's handled for you:export default { redisUrl: process.env.REDIS_URL}From there:Caching is basically one line. cache: 60 on a route caches the response, and keys get hash
PWA with React + Leaflet: lessons from a 31-city map app
Notes from shipping a real-world PWA in Korea:Vite SSG is worth it. SPAs lose Korean SEO because Naver's crawler doesn't fully render JS.Leaflet > Mapbox for cost-sensitive projects. Free OSM tiles + zero cost.Firebase Hosting rewrites let you have deep URLs (/city/suwon) without a backend.KakaoTalk share is non-negotiable in Korea โ 70%+ of social traffic.PWA install banner: don't auto-prompt, let the user discover.Project: https://gyeonggi-currency-map.web.app?ref=devto&utm_source=devto
The 05 Sites Guide to Buying Old Github Accounts In 2026
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03 Easy Ways to Buy Old Github Accounts Smartly
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Building a Modern Photographer Gallery with React 19, Supabase & Cloudinary
Photography websites need to do more than display imagesโthey need to create an experience around the images.For Ever After Studio, I built a modern photographer gallery using React 19 with Supabase for structured data management and Cloudinary for image storage and delivery.The application organizes photography into categories and albums while providing filtering, featured collections, image details and a responsive gallery experience.The main focus was combining a visually minimal interface wi
Top 10 Sites To Buy Old Github Accounts In 2014-26
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Charts built for Chat
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I'm Looking for 5 Frontend Developers to Test RollDate in a Real Project
I have reached the point where another polished demo will tell me less than one honest integration attempt.Iโm building RollDate, a small family of MIT-licensed JavaScript date components. The demos work, the packages are published, and the documentation covers the public API.But that is not the same as proving that another developer can install a package, understand the API, and use it in an actual interface without my assumptions getting in the way.So Iโm looking for five frontend developers:t
Building Real-Time AI Suggestions Without a Meeting Bot
Most AI meeting assistants are built around the same idea: join the call, record what happens, and give you something useful afterwards.A transcript. A summary. Action items. Maybe a list of decisions.Those tools can be useful, but I became interested in a different problem:Can AI help while the conversation is still happening?Not five minutes later. Not in a follow-up email. Right at the moment when you are trying to understand a technical point, formulate an answer, remember something importan
Beyond a Basic Weather App: Architecture & Resilience in React
A weather app is often seen as a simple tutorial project, but turning it into a resilient, production-ready system requires solving real-world frontend challenges.... ๐ Beyond a Basic Weather App: Architecture & Resilience in ReactA weather app is often seen as a simple tutorial project, but turning it into a resilient, production-ready system requires solving real-world frontend challenges.Here is how I architected my Weather Application with a focus on system reliability:โก The Archite
