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Next.js Middleware Deep Dive: A/B Testing and Tenant Routing
What Middleware Is For Next.js middleware runs before a request reaches your route handler—at the edge, before any rendering. It's the right place for: Authentication checks Redirects based on user state Rate limiting A/B testing assignment Geolocation-based routing Request logging Basic Setup // middleware.ts (in root, next to app/) import { NextResponse } from 'next/server'; import type { NextRequest } from 'next/server'; export function middleware(request: NextRequest) { return NextResponse.n
Implementing Dark Mode: CSS Variables, System Preference, and Persistence
Demystifying Dark Mode: The Elegant Path with CSS Variables, System Preference, and Persistence Every modern web application eventually faces the dark mode dilemma. It's no longer just a "nice-to-have"; users expect it, often as a fundamental part of their browsing experience. But how often have you seen dark mode implementations that feel clunky, suffer from a "flash of unstyled content" (FOUC), or completely disregard your OS-level preferences? It's a common struggle, and honestly, it used to
Xcode 26.5 Beta: What Developers Need to Know
Apple dropped the Xcode 26.5 beta at the end of March 2026, bundled with updated SDKs for iOS/iPadOS 26.5, macOS Tahoe 26.5, and an unusually deep Safari update. While it's not a headline release like Xcode 26.0, it carries some genuinely useful additions — especially if your app monetizes via subscriptions. Here's a practical rundown of what changed and what you should care about. StoreKit Gets Serious About Subscription Billing Plans The biggest developer-facing change in Xcode 26.5 is a set o
LLM may be standardizing human expression – and subtly influencing how we think
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We found an undocumented bug in the Apollo 11 guidance computer code
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Are We Idiocracy Yet?
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