Building software for places where the internet barely exists (opens in new tab)

By Mathéo Delbarre, 2nd year CS student at EPITECH Nancy, France TL;DR Problem: district health clinics in Bhutan need to sync patient data to a central hospital hub over 2G connections that drop constantly, with nodes that lose power mid-transfer. Solution: a Rust sync engine built around an encrypted append-only log, delta sync via version vectors, hybrid logical clocks for clock-drift tolerance, and mTLS for identity. Constraints: under 10 MB RAM on a Raspberry Pi 3, static binary, no stab...