Build a complete RBAC system in Next.js with Auth.js v5. Learn how to protect routes with middleware, authorize server components and actions, and create reusable role gates — all with working TypeScript code.
Learn how to implement rate limiting in Next.js App Router using Upstash Redis. Covers middleware, API routes, server actions, and AI endpoint protection with working TypeScript code examples.
A complete guide to Next.js middleware and the proxy.ts migration. Covers authentication gates, i18n routing, rate limiting, A/B testing, CORS, geolocation routing, CVE-2025-29927 security lessons, and performance best practices.