监控和健康

健康检查 - `/api/health`

端点: /api/health
方法: GET
描述: 检查应用程序和数据库的健康状态。

响应 (健康):

{
  "status": "healthy",
  "database": "connected",
  "basicConnection": true,
  "tablesFound": 2,
  "tables": [
    "servers",
    "backups"
  ],
  "preparedStatements": true,
  "initializationStatus": "complete",
  "initializationComplete": true,
  "connectionHealth": true,
  "timestamp": "2024-03-20T10:00:00Z"
}

响应 (退化):

{
  "status": "degraded",
  "database": "connected",
  "basicConnection": true,
  "tablesFound": 2,
  "tables": [
    "servers",
    "backups"
  ],
  "preparedStatements": false,
  "preparedStatementsError": "Prepared statement error details",
  "initializationStatus": "complete",
  "initializationComplete": true,
  "connectionHealth": false,
  "connectionHealthError": "Connection health check failed",
  "connectionDetails": {
    "additional": "diagnostic information"
  },
  "timestamp": "2024-03-20T10:00:00Z"
}

错误响应 (503):

{
  "status": "unhealthy",
  "error": "Database connection failed",
  "message": "Connection timeout",
  "stack": "Error: Connection timeout\n    at...",
  "timestamp": "2024-03-20T10:00:00Z"
}

注意:
- 返回 200 状态码表示系统健康
- 返回 503 状态码表示系统不健康或预备语句失败
- 预备语句失败时包含 preparedStatementsError 字段
- 数据库初始化失败时包含 initializationError 字段
- 连接健康检查失败时包含 connectionHealthError 和 connectionDetails
- 只在开发模式下包含堆栈跟踪
- 测试基本数据库连接、预备语句、初始化状态和连接健康
- 提供全面健康诊断用于故障排除

健康检查 - /api/health​

健康检查 - `/api/health`