Messaging on Hancic Tech Bloghttps://en.hancic.site/tags/messaging/Recent content in Messaging on Hancic Tech BlogHugoen-usSat, 26 Sep 2026 00:00:00 +0000The Crash Window: Why I Picked Double-Counting Over Data Losshttps://en.hancic.site/crash-window-idempotency/Sat, 26 Sep 2026 00:00:00 +0000https://en.hancic.site/crash-window-idempotency/Between writing the count and setting the idempotency key is a window I cannot close. I chose double-counting over data loss because I can measure what I can see.