"Next.js 16 introduces several features, including Cache Components with explicit opt-in caching, AI-powered debugging through Model Context Protocol integration, and Turbopack as the stable default bundler. It also includes enhanced routing with layout deduplication and incremental prefetching for faster page transitions. A key feature in Next.js 16 is Cache Components, which represents a complete departure from the implicit caching found in previous versions of the App Router. This feature centers around the new "use cache" directive that can be used"
"to cache pages, components, and functions, leveraging the compiler to automatically generate cache keys. Unlike previous versions where caching behavior could be unpredictable, all dynamic code is now executed at request time by default, giving developers an experience better aligned with what they expect from a full-stack application framework. Cache Components complete the story of Partial Pre-Rendering, first introduced in 2023, allowing developers to opt portions of their static pages into dynamic rendering without sacrificing fast initial load times."
Next.js 16 adds explicit Cache Components with a new "use cache" directive to enable opt-in caching for pages, components, and functions while the compiler generates cache keys automatically. Dynamic code executes at request time by default, producing more predictable full-stack behavior and enabling Partial Pre-Rendering to mix static and dynamic rendering without harming initial loads. Turbopack is stable and becomes the default bundler for new projects, offering much faster Fast Refresh and production builds while retaining webpack compatibility. Routing updates include layout deduplication and incremental prefetching to speed navigation. AI-powered debugging integrates via the Model Context Protocol.
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