Next.js App Router has transformed web engineering by combining Server-Side Rendering (SSR) and Incremental Static Regeneration (ISR) out-of-the-box. However, scaling large Next.js codebases requires adhering to strict architectural patterns.
Key areas of optimization include: 1. Server Component vs Client Component isolation to minimize client-side bundle weight. 2. Caching database layers using React cache and Next.js fetch config. 3. Optimizing metadata dynamically using generateMetadata APIs to ensure fast Google crawling.
By building structured layouts, utilizing glassmorphic Tailwind styling, and deploying on Vercel Edge networks, you can achieve Lighthouse performance ratings of 95+ easily.