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Mobile Schema Migration Fleet Simulator

Interactive 3D simulator of a mobile app's local database schema migrations rolling out across a device fleet: version staircases, offline devices piling up migration debt, per-step failure and quarantine, and OTA release cadence.

Computer Science3DModerate60 FPS📱 Mobile-adapted⇄ 2D version

A local mobile database — SQLite under Room or Core Data, or a Realm file — carries a schema version that has to march forward one release at a time as the app evolves. This simulator renders a fleet of devices as a 3D staircase of schema versions: each release bumps the target version, online devices attempt their pending migration steps one by one, a per-step failure chance can quarantine a device mid-climb, and devices that stay offline across several releases pile up "migration debt" that compounds geometrically the longer they wait. Tune the failure rate, reconnect rate and release cadence to see how quickly a fleet either converges on the latest schema or accumulates a stuck tail of quarantined installs.

⚙ Under the hood

Watch a fleet of mobile devices climb a 3D staircase of local database schema versions as OTA releases bump the target: online devices migrate step by step, offline ones accumulate migration debt, and failed steps get quarantined.

mobiledatabaseschema migrationsqliteoffline-firstdevops

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install