Offline-first React Native, without losing your mind

Offline-first sounds like a sync problem. It's really a state-ownership problem: the device is the source of truth until the server proves otherwise.

I lean on MMKV for instant local writes and a small outbox of pending mutations. The UI never waits on the network; it reads local state and optimistically reflects every change.

Sync is a background reconciler with last-write-wins for simple records and explicit conflict handling for the few that matter. Boring, predictable, and it survives a day in a field with zero bars.