Show HN: A benchmark comparison of C++ vs. Node.js performance

AI Digest

作者通过基准测试对比C++和Node.js性能，发现库选择和异步I/O模型影响远大于语言本身。

Benchmark shows C++'s performance depends heavily on library choice and I/O model, not just language speed.

Key points

• Crow库的C++仅达5k请求/秒，低于Node.js的12k Crow C++ achieves 5k req/s vs Node.js' 12k
• uWebSockets库让C++实现57k请求/秒，远超Node.js uWebSockets C++ hits 57k req/s, surpassing Node.js
• 异步I/O模型比语言本身对性能影响更大 Async I/O model outweighs language choice in performance
• 同一语言不同库性能差异可达10倍以上 Same language libraries can differ by 10x in speed
• 测试显示Node.js默认http模块性能优于部分C++库 Node.js default http module outperforms some C++ libs

Takeaway: 性能差异源于库实现而非语言本身，需关注I/O模型选择。 / Performance gaps stem from library implementation, not language alone.

Why it matters 展示库实现差异对性能的决定性影响，对技术选型有实际指导意义。