IoT & Embedded
Multi-protocol sensors, Pi gateway, fleet management
Real-world IoT: multi-protocol sensors, Raspberry Pi with local buffering for intermittent networks, multi-tenant cloud aggregation, fleet management with OTA updates.
- 01
Edge buffer on the Pi
Data accumulates locally, sent in batches when the network comes back. Watchdog for auto-restart. Data loss = only if the SD card physically dies.
- 02
Pluggable protocol adapters
Common interface, per-protocol implementations. The team adds a new sensor type in 2-3 hours, doesn't refactor everything.
- 03
Device PKI
Each device has a unique certificate, not an API key. The server validates the signature, revokes compromised certificates.
- 04
Staged OTA rollout
The update goes to 1% of the fleet, then 10%, then 100%. Automatic rollback if the error rate rises.
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