We benchmarked Next.js Server Components and Server Actions against traditional Express REST endpoints across 100,000 simulated client requests.

Full-stack React architectures promise smaller client bundle sizes and simplified data mutations. But how do Server Actions truly hold up under intense enterprise load?

Key Findings

Client bundle size was reduced by 34% by eliminating client-side fetch boilerplate. Cold starts on edge functions averaged 82ms, while steady-state mutations maintained sub-25ms response times.