{
  "id": "go/sql-driver-bad-connection",
  "signature": "error: sql: driver: bad connection",
  "signature_zh": "error: sql: 驱动：连接异常",
  "regex": "error:\\ sql:\\ driver:\\ bad\\ connection",
  "domain": "go",
  "category": "network_error",
  "subcategory": null,
  "root_cause": "数据库连接在空闲时被服务器关闭，或网络中断，导致连接池中的连接失效。",
  "root_cause_type": "generic",
  "root_cause_zh": "底层数据库连接因超时、网络波动或服务器重启而失效，驱动检测到连接不可用。",
  "versions": [
    {
      "version": "1.20",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "连接已损坏，重试无意义",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "问题根源是连接老化，而非池大小",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.9,
      "how": "设置 db.SetConnMaxLifetime(时间) 定期回收旧连接",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.85,
      "how": "实现连接池重试逻辑，捕获错误后重新获取连接",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-07-22",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}