Rolling Our Own S3

Nanit built N3, a Rust-based in-memory video storage system, to replace S3 as their primary landing zone for baby monitor footage processing because S3's per-request fees and 24-hour minimum storage rules were costing them significantly on thousands of uploads processed within seconds. The custom solution uses S3 only as an overflow buffer for edge cases, achieving approximately $500,000 in annual cost savings while maintaining system reliability.