Can Swift Match Rust on a Lambda Micro-Benchmark? Almost.

A few weeks ago, Jérémie Rodon published On-Demand Archives on S3 , a detailed write-up of a Rust Lambda that downloads 3,000 objects (15 GB) from S3, streams them into a ZIP archive, and uploads the result. All within a 512 MB arm64 Lambda, in about 215 seconds. Impressive. At the end of the article, he threw down the gauntlet: "do you think you can do better with your favorite language?" And in…