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5 URL Encoding Bugs That Silently Break Your App

Every web developer hits URL encoding bugs eventually. A redirect loop that only happens with certain usernames. A search feature that breaks when someone types C++. An API that returns garbage when the query contains emoji.These bugs are annoying because they fail silently — the URL looks fine in the browser, but the server receives corrupted data.Here are 5 encoding mistakes I've seen (and made) in production, and how to fix each one. 1. Using encodeURI when you need encodeURIComponentThi

My Take on: An LLM API call, in 4 GIFs

My Take on: An LLM API call, in 4 GIFs IntroductionMy Take on: An LLM API call, in 4 GIFs is gaining massive traction in the developer community. Whether you are a beginner or experienced developer, this guide will help you get up to speed quickly. Why It MattersThe tech landscape is evolving rapidly. Staying current with tools like this gives you a competitive edge in the job market and opens new opportunities for side income. Quick Start Step 1: InstallationMost moder

Why Your ColdFusion App Slows Under Load — and How FusionReactor Reveals the Cause

Your ColdFusion app runs fine in QA. Response times look healthy on a quiet Tuesday morning. Then traffic spikes — a marketing push, a quarterly report run, the first Monday after a release — and the same app starts taking 4 seconds to load a page that should take 200 milliseconds. Logs say “request completed.” Nothing crashed. Nothing errored. It just got slow.Read More

Building a Live Odds Dashboard in React (without the re-render storm)

A live odds dashboard is one of those projects that looks simple — fetch some JSON, display it, refresh on a timer — and then quietly becomes a re-render nightmare. Here's a working React 18+ implementation that doesn't grind your browser when 200 odds update in the same second. What we're buildingA two-column dashboard: left = list of live matches, right = the selected match's 1X2 + Over/Under 2.5 prices, updating every second. 1. The fetch hook (polling-based, cache-aware)import

SVG Keyframe Animation in Pure CSS (No Library)

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Mini Micro Fantasy Computer

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Why Your Chart Library Is the Bottleneck You Never Suspected by Andrew Burnett-Thompson, CEO & Founder of SciChart

You've spent weeks building a real-time dashboard. The backend is fast. The data pipeline is solid. Your websocket is humming along.Then you drop in a chart library and everything falls apart.60fps becomes 6fps. The browser tab is eating 2GB of RAM. Users are telling you the UI feels sluggish. So you start adding debouncing, virtualization, downsampling workarounds... and it gets marginally better. But the core problem doesn't go away. Eventually you end up with a 25-person team writing an extra

Optimizing Browser Fingerprint Spoofing and Session Validation in Automated Scrapers

Maintaining session longevity in high-entropy adversarial environments requires decoupling structural browser fingerprinting from state validation. In the latest patch to our automation pipeline (core/tools/buildinpublic.py and phases/phase4content.py), we overhauled our injection layer to eliminate canvas and WebGL anomalies while tightening session checks.The Tradeoff: Dynamic Spoofing vs. Strict State ValidationMost anti-bot systems flag automated browsers not by missing cookies, but by runti

Gofin – Go library for bot detection via browser fingerprinting

Built this Go library over the past few weeks it takes a browser fingerprint from your frontend JS and scores how bot-like it looks.Basically you collect stuff like navigator.webdriver, screen size, WebGL renderer, canvas hash, timezone, fonts, plugins etc. on the client, send it as JSON to your server, and the library runs it through a bunch of detection rules and gives you back a score and an explanation.Caught things like headless Chrome pretending to be a real browser, SwiftShader GPU (dead

How I Built 8 Free Dev Tools as a Solo Maker — Lessons Learned

The BackstoryI'm a solo developer. No team, no funding, no fancy stack. Just a laptop, Claude Code, and a problem: every online dev tool I used was uploading my data to some server.So I built my own. Eight of them. What I BuiltToolTimeJSON Formatter + CSV export45 minImage → Base64 encoder30 minSQL Formatter with highlighting1 hourMarkdown → HTML preview2 hoursUUID/ULID Generator15 minRegex Tester with captures40 minTimestamp Converter20 minDiff Checker (LCS algo)1.5 hoursTotal: ~7 ho

Appointment Setting Teams Calling Roofing Contractors Need to Remove Supplier and Directory Results First

Before assigning Chicago, Houston, or Dallas roofing lists to callers, agencies should separate callable local service providers from look-alike accounts.An appointment setting agency preparing a roofing outreach campaign may open a CSV for Chicago and Houston and see what looks like a healthy first-pass list: business names, phone numbers, websites, ratings, reviews, categories, and business hours. The problem usually appears only when the operations lead checks a few rows. One result is a roof

How to Merge Multiple PDFs with One API Call — Node.js, Python & curl

Merging PDFs sounds simple — until you try to do it in production.If you've reached for pdf-lib, pdfkit, or Puppeteer to merge PDFs in Node.js, you know the pain:Conflicting dependencies that break on deployMemory spikes with large filesComplex page ordering logicCI pipelines that randomly failThere's a cleaner approach: offload it to an API and stay focused on your actual product. The Forgelab PDF Merge APIThe Forgelab PDF API accepts multiple PDF files and returns a single merged file. On

React.js ~The landscape of data fetching in React~

The landscape of data fetching in React has more options than ever. Here is when each one is the right choice:ScenarioApproachServer Component fetching dataasync / await directly in the componentPassing async data from Server to Client ComponentCreate promise on server, use() on client with SuspenseSimple client-side fetch (popup, dialog, one-off display)use() with a cached promise + SuspenseComplex client state (auto-refetch, pagination, mutations)TanStack Query or SWRComputed/derived state fro

I Have Taken Over React Projects Without Standards. Here Is What That Actually Feels Like.

Every file looked slightly different.Not wrong exactly. Just different. One component used arrow functions. The next used function declarations. State lived in hooks in some features and inline in the UI in others. Naming conventions shifted from folder to folder. Import patterns changed depending on who had last touched the file.I asked for an introduction to the codebase. The answer was: you can see how it is done.I could see how it was done. The problem was that it was done differently everyw

Animating React Without Fighting the Render Loop: useRafFn, useRafState, useFps, useDevicePixelRatio, useUpdate

Animating React Without Fighting the Render Loop: useRafFn, useRafState, useFps, useDevicePixelRatio, useUpdateReact owns one clock and the browser owns another. React's reconciler decides when components re-render based on state updates, effects, and the scheduler's idea of "soon". The browser's compositor paints the screen at whatever rate the display can sustain — sixty frames a second on most monitors, a hundred and twenty on a few. The two clocks are not synced. State updates can land

HTML to JSX: Common Conversion Problems Frontend Developers Still Make

If you've worked with React,you've probably copied HTML into JSX at least once.And then immediately got errors like:Unexpected tokenInvalid DOM propertyAdjacent JSX elements must be wrappedObjects are not valid as a React childConverting HTML to JSX sounds simple,but there are many small differences that constantly trip developers up.In this article, we'll cover:HTML vs JSX differencescommon HTML to JSX mistakesReact attribute conversioninline style issuesSVG conversion problemshow to convert HT

Best Next.js Templates for Developers in 2026

Starting a new Next.js project in 2026 means making a choice upfront: build everything from scratch, grab a free starter, or invest in a premium template that's already production-ready. This guide breaks down the real options, what separates good templates from great ones, and which specific templates are worth your time depending on what you're building. What makes a Next.js template actually production-ready?Most free Next.js starters look good in a screenshot and fall apart when you try

The 5 Best Places to Buy Next.js Templates in 2026 (Compared by Price)

Not all Next.js template marketplaces are created equal - and the price on the listing page is rarely the full story. A $29 template with an annual license can cost you $200+ over two years. A "free" starter that requires a week of cleanup costs more than a $79 premium template in developer hours. Here's a clear-eyed comparison of where to actually buy Next.js templates in 2026, broken down by what they cost you in real terms. What to check before you buy from any marketplaceLicense model -

The 8 Best Next.js Boilerplates in 2026 (Ranked by Production Readiness)

Every new Next.js project starts with the same question: grab a free starter, spend a week building architecture, or invest in something production-ready from day one. I've built 6 Next.js templates that ship commercially - SaaS dashboards, CRM tools, AI landing pages, agency sites, docs, and portfolios. Here's how everything stacks up in 2026, including the free alternatives I'd actually recommend. How I ranked theseEach pick is ranked on five criteria that matter when you're shipping real

How I Fixed a CSS Animation Bug in an Open Source React Library

A few months back I contributed a fix to react-bits, an open source library of animated React components.The bug was subtle — enableMagnetism and enableTilt animations had a 300ms delay because the component used transition-all in its base CSS class. This caused GSAP transform animations to fight against the CSS transition, creating a noticeable lag.The fix was straightforward: swap transition-all for transition-colors. This lets GSAP control transforms freely while CSS still handles color-relat