Next.js Route Handlers: GET Stopped Caching in 15 — How to Cache in 16

Picture a Next.js 14 app whose GET /api/products handler reads prices from the database. A price drops from $40 to $35, and the API keeps answering $40: Next.js 14 ran the handler once at build time and serves that saved response. Upgrade the same file to Next.js 15 and the stale price is gone, and so is the cache. Every request now runs the... Weiterlesen