graph TB
    Client[客户端] --> API[DeFS API]
    API --> StorageEngine[存储引擎]
    API --> Network[网络层]
    
    subgraph 存储引擎
    StorageEngine --> FileProcessor[文件处理器]
    StorageEngine --> SliceManager[分片管理器]
    StorageEngine --> Crypto[加密系统]
    StorageEngine --> MetaDB[元数据存储]
    end
    
    subgraph 网络层
    Network --> DHT[DHT网络]
    Network --> P2P[P2P传输]
    Network --> PubSub[发布订阅]
    end

    subgraph 数据存储
    FileProcessor --> LocalFS[本地存储]
    SliceManager --> DistributedFS[分布式存储]
    end

sequenceDiagram
    participant Client as 客户端
    participant Local as 本地处理
    participant Network as 网络层
    participant Nodes as 存储节点

    Client->>Local: 1. 上传文件
    Note over Local: 2. 文件分片
    Note over Local: 3. RS编码
    Note over Local: 4. 加密处理
    
    loop 每个分片
        Local->>Network: 5. 随机分发
        Network->>Nodes: 6. 存储分片
        Nodes-->>Network: 7. 确认存储
    end
    
    Network-->>Local: 8. 生成索引
    Local-->>Client: 9. 返回文件ID

sequenceDiagram
    participant Client as 客户端
    participant Network as 网络层
    participant Nodes as 存储节点
    participant Local as 本地处理

    Client->>Network: 1. 请求文件
    Network->>Network: 2. 广播索引请求
    Nodes-->>Network: 3. 返回分片位置
    
    loop 并行下载
        Network->>Nodes: 4. 请求分片
        Nodes-->>Local: 5. 返回分片数据
    end
    
    Note over Local: 6. 解密处理
    Note over Local: 7. RS解码
    Note over Local: 8. 文件重组
    Local-->>Client: 9. 返回完整文件

graph TB
    subgraph 对偶节点对
    Primary[主节点] <--> Mirror[镜像节点]
    end
    
    subgraph 监控系统
    HeartBeat[心跳检测]
    StateSync[状态同步]
    DataMirror[数据镜像]
    end
    
    Primary --> HeartBeat
    Mirror --> HeartBeat
    Primary --> StateSync
    Mirror --> StateSync
    Primary --> DataMirror
    Mirror --> DataMirror

    subgraph 故障恢复
    Detect[故障检测] --> Select[节点选择]
    Select --> Migrate[数据迁移]
    Migrate --> Rebuild[重建索引]
    end

graph LR
    subgraph IPFS
    A[请求] --> B[DHT查询]
    B --> C[节点1]
    C --> D[节点2]
    D --> E[节点3]
    E --> F[目标数据]
    end

    subgraph DeFS
    G[请求] --> H[广播索引]
    H --> I[获取位置]
    I --> J[直接下载]
    end