Durability

PostgreSQL storage: Why S3 fails WAL flushes

Don't let millisecond delays kill throughput. Learn why WAL flushes demand microsecond latency that standard S3 tiers simply cannot provide.

Apr 17, 2026 Alex Kumar 15 min read

Amazon S3 Durability: 18 Years of Eleven Nines

Alex breaks down how S3 hit 11 nines durability over 18 years by using formal verification and Rust for critical data paths.

Mar 17, 2026 Alex Kumar 7 min read

S3 at scale: 500T objects, same API after 20 years

AWS S3 now holds 500 trillion objects. I break down how the API stayed identical while the backend completely rewrote its storage mechanics.

Mar 16, 2026 Marcus Chen 9 min read