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wiki/concepts/Lifecycle-Policy.md

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+---
+title: "Lifecycle Policy"
+type: concept
+tags: [AWS, Storage, Cost-Optimization]
+sources: []
+last_updated: 2026-04-19
+---
+
+## Definition
+生命周期策略是一种自动化规则，用于在不同存储层之间自动转换数据、设置保留策略和管理过期对象，无需手动操作。
+
+## Key Features
+- 自动存储层转换：根据预设规则将数据从热存储移动到冷存储
+- 保留策略：设置快照和对象的保留期限
+- 过期清理：自动删除过期对象和不完整的分段上传
+- 成本优化：减少存储费用，优化存储支出
+
+## AWS Services
+- **S3 Lifecycle Policies**：转换对象到 S3 Standard → Intelligent-Tiering → Glacier 层级
+- **EFS Lifecycle Policies**：将文件在标准层和不频繁访问层之间移动
+- **EBS Snapshot Lifecycle**：归档快照到 Archive 层，使用 DLM 或 AWS Backup
+
+## Implementation
+```json
+{
+  "Rules": [
+    {
+      "ID": "MoveToGlacier",
+      "Status": "Enabled",
+      "Filter": {"Prefix": "archive/"},
+      "Transitions": [
+        {"Days": 365, "StorageClass": "GLACIER"}
+      ],
+      "Expiration": {"Days": 1825}
+    }
+  ]
+}
+```
+
+## Connections
+- [[S3-Intelligent-Tiering]] ← implements ← [[Lifecycle-Policy]]
+- [[EFS-Inrequent-Access]] ← implements ← [[Lifecycle-Policy]]
+- [[EBS-Snapshot-Archive]] ← uses ← [[Lifecycle-Policy]]