Campfire

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   DHH says agents made Rust 150x faster; devs find the benchmark was rigged

   At Rails World 2026, Ruby on Rails creator DHH said he stopped hand-writing code about four months ago and had agents rewrite 37signals' chat app Campfire in Elixir, Go and Rust. His chart showed the Rust version hitting 36,260 requests per second on a chat-room load test — roughly 150x Rails, 50x Elixir and 9.4x Go. Developers then dug through the public repos and found the Rust main branch had 398 commits as of October 6 (380 of them by DHH) versus 3 each for Elixir and Go, while the Elixir version funneled all SQL queries through a single GenServer, which critics called an unfair setup. DHH defended his core claim, saying he did not intervene in the implementations, and announced the next HEY will use native clients with a Rust-rewritten backend that he says cuts CPU use 99% and memory 95%.

   36氪 人工智能 · 🔥 4

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