Next.js 15 RC

The Next.js 15 Release Candidate (RC)

• React: Support for the React 19 RC, React Compiler (Experimental), and hydration error improvements
• Caching: fetch requests, GET Route Handlers, and client navigations are no longer cached by default
• Partial Prerendering (Experimental): New Layout and Page config option for incremental adoption
• next/after (Experimental): New API to execute code after a response has finished streaming
• create-next-app: Updated design and a new flag to enable Turbopack in local development
• Bundling external packages (Stable): New config options for App and Pages Router

Reference: https://nextjs.org/blog/next-15-rc

Next.js 14.2 (experimental)

Caching improvements in 14.2 include:

staleTimes

• By default, prefetched routes (using the component without the prefetch prop) will be cached for 30 seconds, and if the prefetch prop is set to true, 5 minutes. You can overwrite these default values by defining custom revalidation times in next.config.js:

• const nextConfig = {
    experimental: {
      staleTimes: {
        dynamic: 30,
        static: 180,
      },
    },
  };
  module.exports = nextConfig;
  

Reference: https://nextjs.org/blog/next-14-2#caching-improvements