{
  "id": "python/aiohttp-client-connection-pool",
  "signature": "aiohttp.client_exceptions.ClientConnectionError: Connection pool is full",
  "signature_zh": "aiohttp客户端异常：连接池已满",
  "regex": "aiohttp\\.client_exceptions\\.ClientConnectionError:\\ Connection\\ pool\\ is\\ full",
  "domain": "python",
  "category": "network_error",
  "subcategory": null,
  "root_cause": "Too many concurrent requests exhausting the connection pool limit of aiohttp.",
  "root_cause_type": "generic",
  "root_cause_zh": "并发请求过多，耗尽了aiohttp的连接池限制。",
  "versions": [
    {
      "version": "3.7",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.8",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.9",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "May still be insufficient and can lead to memory issues.",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Creates many sessions, causing resource leaks and performance degradation.",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.95,
      "how": "sem = asyncio.Semaphore(10); async with sem: await session.get(url)",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.9,
      "how": "conn = aiohttp.TCPConnector(limit=100); async with aiohttp.ClientSession(connector=conn) as session:",
      "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": 0.84,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2025-01-05",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}