InfluxDB Time-Series Storage

All physiological metrics emitted from the wearable device are stored in InfluxDB for longitudinal health trend analysis.

Influx Line Protocol Schema

Data is ingested over HTTP Line Protocol via the backend’s background worker:

biosignals,device=pulzaura_lolin32 ecg=0.45,pulse=512.0,spo2=98.5,pulse_rate=72.0,temp=36.6 1727211500000000000

• Measurement: biosignals
• Tag Set: device=pulzaura_lolin32, session_id=<uuid>
• Field Set: ecg, pulse, spo2, pulse_rate, bp_low, bp_high, body_temp, respiration
• Timestamp: Nanosecond Unix timestamp generated on packet arrival.

Retention Policy

Configured with an 8-week hot retention policy for raw 50 Hz waveforms, alongside continuous downsampling into 1-minute bucket aggregates for multi-month health reviews.