Web Application — Feb 2025
Spotify Jam Web Application
IoT sensor data, live — anywhere, offline-capable.
14Sensor types
250msRefresh rate
72 hrOffline buffer
A cross-platform mobile app for monitoring IoT sensor streams. Live charts update at 250ms intervals. Offline caching ensures field engineers keep working when connectivity drops.
Architecture first
We modelled the data pipeline before touching the UI. A local SQLite layer buffers incoming events and syncs to the cloud when a connection is available.
Charting at 250ms
Standard charting libraries stall when you push updates faster than ~2Hz. We forked a canvas-based renderer and batched DOM writes to maintain 60fps on mid-range devices.
Reliability over novelty
Field engineers don't care about animations. They care about not losing four hours of data when the cell tower drops.
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