🚀 App
The app instance conventionally denotes the Fiber application.
🧠 Ctx
The Ctx struct represents the Context which hold the HTTP request and response. It has methods for the request query string, parameters, body, HTTP headers, and so on.
🧬 Middleware
Middleware is a function chained in the HTTP request cycle with access to the Context which it uses to perform a specific action, for example, logging every request or enabling CORS.