An SSR Performance Showdown

🔍 Comprehensive #SSR Performance Testing:
• Test setup: 2398 div elements spiral rendering on #NodeJS v22, #M1Mac with 8GB RAM

📊 Performance Rankings (requests/second):
• #fastifyhtml: 1088 (baseline templating)
• #Vue: 1028 (best full-featured performance)
• #Svelte5: 968 (pre-release version)
• #SolidJS: 907 (impacted by hydration IDs)
• #Preact: 717 (lightweight alternative)
• #React19: 572 (RC version)

🛠️ Testing Environment:
• Built using #Fastify and @fastify/vite
• Production builds tested
• Consistent styling and template implementations
• No client-side reactivity features

💡 Key Findings:
• #Vue and #Svelte offer best balance of performance and ecosystem maturity
• Hydration markers impact performance (demonstrated in #SolidJS)
• Simple templating (#fastifyhtml) outperforms full frameworks

Source: https://blog.platformatic.dev/ssr-performance-showdown