Cache components in Next.js: Faster pages with partial pre-rendering

Next.js 16 introduces Cache Components to solve web performance limitations where entire pages must wait for slow server operations. Unlike the traditional static-or-dynamic approach, Cache Components enable component-level caching decisions, allowing predictable sections to be reused while request-specific parts remain dynamic. Combined with Partial Pre-Rendering and Suspense boundaries, this delivers immediate page shells with progressive content loading.