🔧 Next.js 16 Middleware: authorization patterns that scale and the ones that cause race conditions

Next.js 16 Middleware: authorization patterns that scale and the ones that cause race conditions


Next.js middleware is basically the bouncer at a club. It doesn't decide if you're welcome inside — that's the staff's job. But it does decide whether you get through the door. And if the bouncer starts running a full background check on every person...