SOLVANTIS Engineering Team•August 5, 2026•6 min read
#Next.js#React 19#Architecture#Performance
Building modern web applications requires a clear boundary between server-rendered data structures and client-side interactive state.
Section Overview
Why Server Components First?
Next.js App Router defaults all components to Server Components. This design shift ensures that database queries, secret keys, and heavy parsing logic remain strictly on the server—shipping zero JavaScript to the browser.
Key Architectural Guidelines:
1. Keep stateful hooks (useState, useEffect) at the extreme leaves of your component tree.
2. Pass pre-fetched server data down as simple JSON props.
3. Use Server Actions for form submissions to eliminate dedicated REST boilerplate.
By following these patterns, we consistently achieve sub-1.5s LCP performance while maintaining rich interactive user interfaces.