---
title: "Zero Data Loss Guarantee"
type: concept
tags: []
last_updated: 2026-05-01
---

## Definition

通过数学约束强制执行 `Source_Rows == Success_Rows + Quarantine_Rows` 的数据修复保证机制。任何不匹配立即触发 Sev-1 告警与系统异常。

## Invariant

```
Source_Rows == Success_Rows + Quarantine_Rows
```

## Row Lifecycle

| State | Description | Destination |
|-------|-------------|-------------|
| `AI_FIXED` | SLM 置信度 ≥ 0.75，lambda 验证通过 | Staging → Production |
| `HUMAN_REVIEW` | 置信度 < 0.75，或无法自动修复 | Human Quarantine Dashboard |

## Guarantees

- **Mathematical constraint, not a goal**: 不满足等式时系统立即失败，不允许静默通过
- **Full tracking**: 每条异常行在修复生命周期中始终被追踪
- **No silent corruption**: 修复后的数据先到 staging，确认后才写生产

## Alert Conditions

```python
if source != success + quarantine:
    trigger_alert(severity="SEV1", message=f"DATA LOSS DETECTED: {missing} rows")
    raise DataLossException(...)
```

## Related

- [[Semantic Anomaly Compression]]
- [[Air-Gapped SLM Fix Generation]]
- [[Lambda Safety Gate]]