Firmware rollout: 5% устройств bricked — staged rollout design

Ситуация: Previous firmware rollout: 5% devices bricked (стали неработоспособны). Costly recall. Need rollout strategy + monitoring.

IoT firmware updates. Auto-applied. Rollback complicated post-brick. Need staged: small subset → monitor → expand.

Доступные данные

• firmware_updates: device_id, version, applied_at, status (success/fail/brick)
• devices: id, generation, region
• health_metrics: device_id, ts, indicators

Задачи

• Staged rollout: % each stage, duration.
• Health metrics: что monitor for early signs.
• Stop criteria: when halt rollout.
• Communication: customers, support.

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