TYPO3 Core

The redirect handling is a perfect usecase of PSR-15 middlewares.

Redirect handling wants to a) prevent the regular frontend rendering and b) return an own response. c) in case a no redirect matches it want's the regular RequestHandler to be invoked.

a) is doable by not invoking the RequestHandler a middleware gets passed by parameter
b) is simple by simply returning an own PSR-7 Response
c) is the standard case for a middleware.