Optimizing 700 CPUs Away With Rust

In Tenable.io, we are heavy users of Datadog custom metrics. Millions of metrics are sent through Dogstatsd, providing deep insights into the complex platform. As the platform grew, we found that a significant number of metrics sent by legacy apps were obsolete. We tried to hunt down these obsoleted metrics in the codebase, but modifying legacy applications was extremely time consuming and risky.

[theatrical]

"At scale, even small optimization can result in a huge impact." いい標語だな。

[tanakh]

NodeJSで書かれた1000CPUと400GB食ってたUDP datagram forwarderをRustで書き直したらCPUを700個、メモリを300GB減らせたという話らしい。