I think “middleware” is a bit of a misnomer in Next.js. It’s really an edge function that runs before your request hits the app -- quick header checks, routing, and other lightweight guards. It runs on the edge runtime, not on the app server.
The post's author seems to conflate the edge runtime with the server runtime. They’re separate environments with different constraints and trade-offs.
I struggled with Next.js at first for the same reason: you have to know what runs where (edge, server, client). Because it’s all JavaScript, the boundaries can blur. So having a clear mental model matters. But blaming Next.js for that complexity is like blaming a toolbox for having more than a hammer.
The post's author seems to conflate the edge runtime with the server runtime. They’re separate environments with different constraints and trade-offs.
I struggled with Next.js at first for the same reason: you have to know what runs where (edge, server, client). Because it’s all JavaScript, the boundaries can blur. So having a clear mental model matters. But blaming Next.js for that complexity is like blaming a toolbox for having more than a hammer.