Middleware

5 videos across 2 channels

Middleware acts as a programmable layer that intercepts and transforms requests as they flow through a web app, enabling tasks like authentication, header manipulation, CORS handling, and request logging. The included videos illustrate its practical use across stacks: from edge-ready hooks that read Cloudflare context and modify responses, to Express and FastAPI patterns for routing, error handling, and modular composition, and even middleware-driven protections in server actions with Next.js. Together, they show how middleware unlocks security, performance, and developer ergonomics across environments.