Engineering
A sign-out must not lose a session
Signing out used to wipe this device's data, including writes that hadn't reached the server yet. Now they're parked under your account and put back when you sign in again.
2 min
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In: Engineering
EngineeringLogging a workout in a basement with no signal
How the PaceStreak app saves every session to the device first, queues writes in an IndexedDB outbox, and syncs across devices with an idempotent batch endpoint and a sequence cursor.
4 min