Topic
Building features in Next.js App Router projects, including public/ asset serving and Node.js vs Edge route handler runtimes.
Next.js treats any component that touches a request-time API as dynamic, so one call in a root layout removes the prerendered shell for every page beneath it. A dev.to post's repair is a Suspense-wrapped leaf that reads the cookie.
Reality
The App Router built a static route named after its own placeholder, so a generated set of 1,200 pages never reached the output and nothing in the build complained. The developer lost most of a day to it.
Reality
The photo-modal pattern gives a lightbox a shareable URL by resolving the same route twice, once on a client transition and once from scratch. Only the from-scratch path needs a fallback file per slot.
Reality
A dev.to field report argues the ten-line in-memory limiter multiplies your limit by warm instance count, and that path-based middleware rules cannot see a Server Action at all.
Reality
A practitioner's field report puts numbers on the wins from server components, Partial Prerendering and Turbopack, then puts numbers on the caching bugs and upgrade bills.
Reality
A dev.to field report on Next.js App Router push finds iOS Safari exposes the Push API only to Home Screen installs, which makes the install prompt part of the notification stack.
Reality