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How to Monitor Firebase in Production
Firebase Monitoring BasicsFirebase is managed but your integration needs observability. Firestore Latencyasync function getDocument(collection, id) { const start = Date.now(); const snap = await db.collection(collection).doc(id).get(); console.log(JSON.stringify({ event: 'firestore_read', duration_ms: Date.now() - start })); return snap.data();} Health Endpointexports.health = functions.https.onRequest((req, res) => { res.json({ status: 'ok' });});Monitor with Vigilmon. S
How to Monitor Auth0: Login Failures, Callback Errors, and Uptime
Auth0 Monitoring EssentialsAuth0 is your app's front door. When it's slow or unavailable, users can't log in. Log Auth Eventsapp.use((err, req, res, next) => { if (err.status === 401) { console.error(JSON.stringify({ event: 'auth_failure', status: err.status, path: req.path })); } next(err);}); Health Check for External MonitoringAdd an unauthenticated health endpoint and monitor it with Vigilmon:app.get('/health', (req, res) => { res.json({ status:
I built a time-travel debugger for Zustand — and it caught three bugs I'd already shipped
If you use Zustand, you've had this moment: the UI is wrong, you know a store changed when it shouldn't have, and now you're scattering console.log calls and refreshing, trying to catch the one action that did it. State debugging is detective work — and Zustand, by design, is so minimal that it doesn't give you much to work with.I wanted to see it instead. So I built Zustand DevTools: a Chrome DevTools panel that records every state change in your app and lets you walk back through them. Th
Compress Images to an Exact KB Size Without Losing Quality
Need a photo under 20 KB, 50 KB, or 100 KB for an SSC, UPSC, or visa form — and tired of guessing quality percentages until you get lucky?👉 Try it instantly: https://tooladda.online/image-compress-to-kb.html🌐 Explore more free tools: https://tooladda.online✔ Free · ✔ No signup · ✔ Nothing uploaded · ✔ Works entirely in your browser Short DescriptionMost "image compressors" make you guess a quality slider and hope. This one flips the problem: you type the KB size the form actually asked for,
How to Monitor WebSocket Connections and Real-Time Apps in 2025
Why Monitor WebSockets?Real-time applications built on WebSockets introduce unique monitoring challenges. Unlike HTTP, WebSocket connections are persistent - a dropped connection can silently break chat, dashboards, or collaborative editors. Key Metrics to TrackConnection establishment - did the handshake succeed?Connection duration - are connections staying alive?Message throughput - messages per secondUnexpected drops - reconnection rate Tracking Connection State`javascriptcons
Building ALAD: Real-Time AI Video Audio Dubbing in Chrome with Gemini API & WebSockets
Building ALAD: Real-Time AI Video Audio Dubbing in Chrome with Gemini API & WebSocketsImagine watching a video, live stream, or online course in a language you don't speak, and hearing it dubbed in real-time into your native language—right inside your browser, with almost zero latency.That is exactly why I built ALAD (Live Audio Dubbing / LAD), an open-source Chrome Extension that leverages Google’s Gemini API and WebSockets to capture live tab audio, translate it on the fly, and play back n
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Krestianstvo - Abstract Holographic Computer
KWE · abstract holographic computer · the processFull Documentation ↗ · Live demo ↗ · Source code ↗Abstract holographic computer in which the machine state is a group-theoretic register, the memory is interference read by correlation, and the processor is a wave medium that the register executes on itself — Lisp's meta-circular eval performed on physics instead of syntax, under Croquet-style replication where determinism is extended with naturality with shared proper time (Space-Time from Specia
Turn any newsletter into a database
Newsletters are the strangest data feed on the internet. Airlines, deal hunters, job boards, real estate brokers, security teams: thousands of organizations run pipelines that end in a beautifully formatted email, and nowhere else. There is no API. There is no RSS. There is a designer-approved HTML table in your inbox, and that is the product.Which means your inbox is quietly one of the best free data sources you have. You just cannot query it.This tutorial fixes that. By the end, a flight-deals
🥈 React Performance Tips: 12 Ways to Make Your App Faster
React is fast by default.But as an application grows, unnecessary renders, large lists, too much JavaScript, and excessive API requests can make it slower.The good news is that you don't need complicated tricks everywhere.Let's look at 12 practical ways to improve React performance, from simple improvements to more advanced techniques. 1. Stop Rendering What You Don't NeedEvery time a component renders, React runs its component function again.That doesn't mean every render is a problem. The
I'm switching my phone from Android to Linux
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Meta Ran Ads That Contained AI-Generated Child Sexual Abuse Imagery
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Choosing Browser Document Storage: CORS Limits in React and Node.js
Use server-mediated uploads when a React application stores private user documents, otherwise reach for presigned browser uploads only after the exact bucket, provider, headers, and CORS policy pass an end-to-end test. Short answer: the backend path is the easier default; direct object storage is a capacity optimization, not a starting assumption.I make this call against an upload SLO, not a diagram: a successful response must mean the object can be read, its database row points to the right uni
Muse Code and Muse Spark 1.2
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Sula: A Gemini protocol server written in Scryer Prolog
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Zed DeltaDB
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Fast and Cheap Ways to Bridge Ethereum to Solana
Bridge Ethereum to Solana • Low Fees • Fast TransfersStarting out in decentralized finance often brings immediate roadblocks when digital capital sits locked on Ethereum while fast-paced trading opportunities beckon on the Solana network. Because these two high-profile blockchains run on separate consensus rules and incompatible virtual machine environments, direct transfers are fundamentally impossible without specialized middleware. To solve this dilemma, users rely on robust cross-chain infra
Building for the Next Wave: My Journey Crafting Next.js Templates for the Nigerian Market
Bridging Design and Code to Empower Local BusinessesAs a full-stack developer specializing in JavaScript and React, one of the most exciting ventures I'm currently on is building ready-made websites and Next.js templates through Softchic. This isn't just about coding; it's about deeply understanding the needs of businesses, particularly within the vibrant and rapidly evolving Nigerian market, and translating those into high-performance, beautiful web solutions. Why Next.js? Performanc
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 — 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
🚀 Mock APIs Evolved: GraphQL Gateway, Fake JWT Auth, Dynamic Custom Collections & TypeScript SDKs in Playground API v3
Mock REST APIs like standard JSONPlaceholder are great for quick hello-world prototypes. But as soon as your frontend app grows to test GraphQL queries, JWT authentication flows, custom domain entities (like products or orders), or TypeScript auto-completion, standard mock tools quickly hit a brick wall.A while ago, I launched Playground API—a zero-config, stateful mock API that solved the biggest flaw in mock testing: instant state loss. Playground API introduced zero-login per-session sandboxi
