React SSR 框架大比拼：TanStack Start、React Router 和 Next.js 在负载下

Performance benchmarks capture a moment, not a final judgment. Results depend on a specific workload, scale, and constraints; they do not rank frameworks by value. Next.js stands out for its widespread adoption, strong compatibility, and vast ecosystem trusted by millions. TanStack, as a newcomer, made bold architectural choices. React Router is positioned differently along the maturity curve. Each framework wins in its own context.

性能基准测试捕捉的是一个瞬间，而不是最终判断。结果取决于特定的工作负载、规模和约束；它们并不按价值对框架进行排名。Next.js 以其广泛采用、强大兼容性和数百万用户信赖的庞大生态系统而脱颖而出。TanStack 作为新人，做出了大胆的架构选择。React Router 在成熟度曲线上定位不同。每个框架都在自己的语境中获胜。
The numbers matter less than the response: every team addressed our shared data and delivered fixes. This collaboration with open data, shared flamegraphs, and upstream fixes makes Node.js a safe, long-term choice for enterprise teams.

数字不如响应重要：每个团队都处理了我们共享的数据并交付了修复。这个带有开放数据、共享 flamegraphs 和上游修复的协作，使得 Node.js 成为企业团队的安全、长期选择。

We are updating the results after readers pointed out some inconsistencies in the code. We will update those numbers soon.

我们在读者指出代码中一些不一致之处后，正在更新结果。我们将很快更新这些数字。

TL;DR

With help from Claude Code, we built the same eCommerce app in three SSR frameworks and tested them at 1,000 requests per second on AWS EKS. We ran each framework both on Watt and directly on Kubernetes.

在 Claude Code 的帮助下，我们在三个 SSR 框架中构建了相同的电商应用，并在 AWS EKS 上以每秒 1,000 个请求的速率测试了它们。我们在 Watt 上运行了每个框架，并直接在 Kubernetes 上运行。

The results revealed big performance differences and highlighted a few key themes:

结果揭示了巨大的性能差异，并突出了几个关键主题：

Running Node services on Watt improves average latency.

在 Watt 上运行 Node 服务可以改善平均延迟。
The TanStack team is doing excellent work. Their framework outperformed the others we tested by a wide margin.

TanStack 团队做得非常出色。他们的框架在性能上远远超过了我们测试的其他框架。
The Next.js team has made impressive performance improvements. Upgrading from v15 to v16 canary more than doubled throughput and reduced latency by six times. Their collaboration also led to a 75% speedup in React’s RSC deserialization, which benefits everyone using React.

Nex...