The signal in the feed.

ChatGPT Might Be Recommending Your Competitor, Not You — Here's How We Built a Tool to Check

ChatGPT Might Be Recommending Your Competitor, Not You — Here's How We Built a Tool to Check Ask ChatGPT who the best project management tool is. Or the best CRM for startups. Or the best anything-in-your-category. It'll give you an answer — a specific one, with a specific brand in it. If yours isn't in that answer, you've lost a customer you never knew was in play. That's the problem I set out to measure with Relevyn: how visible is a brand across the AI engines that are quietly becoming the ne

Instagram Scraping Tools Compared — Which One Should You Use in 2026?

If you need to scrape Instagram data, there are multiple tools available. But which one should you pick? I compared the top 8 options. Tool Developer Rating Users Pricing Instagram Scraper Apify 4.8 315K Pay per event Instagram Profile Scraper Apify 4.7 162K Pay per event Instagram Reel Scraper Apify 4.4 115K Pay per event Instagram Post Scraper Apify 4.4 105K Pay per event Instagram Hashtag Scraper Apify 3.6 67K Pay per event Instagram Comments Scraper Apify 4.5 41K Pay per event Instagram API

React Performance Optimisation Checklist: A Complete Guide for Building Faster React Applications

Want to build React applications that users love and recruiters notice? This React performance optimization checklist covers the most effective techniques senior engineers use to create fast, scalable, and maintainable applications. Estimated Reading Time: 8 minutes Performance is no longer a luxury—it's a business requirement. A slow React application leads to: Higher bounce rates Poor user experience Lower conversion rates Increased infrastructure costs Negative SEO rankings Frustrated users W

In Praise of Observational Evidence

How We Made IPFS Content Publishing 10x Faster

A space history mystery: What happened to the Viking arm used 50 years ago?

A timely tale about a 50-year-old robotic arm...

useState vs useReducer vs Zustand: I Built the Same Feature Three Ways (With Live Render Counts)

"Should I use useState, useReducer, or a store like Zustand?" usually gets answered with vibes. So I built all three running the same feature, side by side, with live render counts — because the thing that actually drives the decision is invisible until you watch it. ▶ Live demo: https://state-mgmt-compare.vercel.app/ Source (React 19 + real Zustand): https://github.com/dev48v/state-mgmt-compare Two views read two slices — count and name. Click "bump count" in each column and watch the per-view

What is React Fiber? How React Works Under the Hood

Estimated read: ~18 minutes. I'll assume you're comfortable with React basics — components, state, the "virtual" DOM, and the idea of "reconciliation" — and ready to peek under the hood. We'll build everything else up together. Most of us learn React as a friendly black box: you change some state, the UI updates, everyone goes home. That model holds up fine until the day your app feels sluggish, or an interview asks: What actually happens between setCount(1) and the screen changing? And you real

Ask HN: Who is hiring? (July 2026)

Please state the location and include REMOTE for remote work, REMOTE (US) or similar if the country is restricted, and ONSITE when remote work is not an option. Please only post if you personally are part of the hiring company—no recruiting firms or job boards. One post per company. If it isn't a household name, explain what your company does. Please only post if you are actively filling a position and are committed to replying to applicants. Commenters: please don't reply to job posts to compla

Ask HN: Who wants to be hired? (July 2026)

Share your information if you are looking for work. Please use this format: Location: Remote: Willing to relocate: Technologies: Résumé/CV: Email: Readers: please only email these addresses to discuss work opportunities. Searchers: try https://nthesis.ai/public/hn-wants-to-be-hired, https://www.wantstobehired.com. Comments URL: https://news.ycombinator.com/item?id=48747975 Points: 106 # Comments: 243

I built a VS Code Extension that mocks your OpenAPI spec locally — no Postman, no Docker, no Context switching

Every time I had to test an API endpoint while writing an OpenAPI spec, I had to leave VS Code, open...

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