Deep Dive: AWS S3 Architecture, Rust Rewrite, and Heat Management at 280 Trillion Objects
Franc0Fernand0 · x · 2026-08-27
This deep dive into Amazon S3 reveals the architecture behind a system holding 280 trillion objects and handling 100 million requests per second. Key takeaways: S3 consists of hundreds of microservices; the primary enemy is "heat" (load concentration) rather than storage capacity, mitigated by distributing traffic; and the storage node code was rewritten in Rust and formally verified, a rarity outside academia and safety-critical niches.
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