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        "name": "zerion",
        "url": "https://api.zerion.io",
        "auth_required": false,
        "rate_limit": "unlimited",
        "priority": 8,
        "timeout": 10
      },
      {
        "name": "whalemap",
        "url": "https://whalemap.io/api",
        "auth_required": false,
        "rate_limit": "unlimited",
        "priority": 9,
        "timeout": 10
      }
    ]
  },
  "error_handling": {
    "451": {
      "description": "Geo-block detected",
      "actions": ["switch_proxy", "try_alternative_source", "use_different_exchange"]
    },
    "429": {
      "description": "Rate limit exceeded",
      "actions": ["move_to_next_source", "mark_temporarily_unavailable", "exponential_backoff"]
    },
    "401": {
      "description": "Authentication failed",
      "actions": ["try_backup_key", "switch_to_no_auth", "check_key_validity"]
    },
    "403": {
      "description": "Forbidden",
      "actions": ["try_alternative_source", "check_permissions"]
    },
    "404": {
      "description": "Not found",
      "actions": ["skip_to_next_source"]
    },
    "500": {
      "description": "Internal server error",
      "actions": ["mark_source_down", "skip_to_next", "retry_after_5min"]
    },
    "502": {
      "description": "Bad gateway",
      "actions": ["skip_to_next_source", "retry_after_2min"]
    },
    "503": {
      "description": "Service unavailable",
      "actions": ["skip_to_next_source", "retry_after_5min"]
    },
    "timeout": {
      "description": "Request timeout",
      "actions": ["retry_with_increased_timeout", "move_to_faster_source"]
    }
  },
  "retry_strategy": {
    "max_retries": 3,
    "retryable_errors": [451, 429, 500, 502, 503, 504, "ETIMEDOUT", "ECONNRESET"],
    "non_retryable_errors": [400, 401, 403, 404],
    "backoff": {
      "type": "exponential",
      "initial_delay_ms": 1000,
      "max_delay_ms": 10000,
      "multiplier": 2
    }
  },
  "caching": {
    "market_prices": {
      "ttl_seconds": 60,
      "max_age_seconds": 300
    },
    "ohlc_candlestick": {
      "ttl_seconds": 300,
      "max_age_seconds": 3600
    },
    "blockchain_explorer": {
      "ttl_seconds": 120,
      "max_age_seconds": 600
    },
    "news_feeds": {
      "ttl_seconds": 600,
      "max_age_seconds": 3600
    },
    "sentiment_data": {
      "ttl_seconds": 300,
      "max_age_seconds": 1800
    },
    "onchain_analytics": {
      "ttl_seconds": 600,
      "max_age_seconds": 3600
    },
    "whale_tracking": {
      "ttl_seconds": 180,
      "max_age_seconds": 900
    }
  },
  "validation": {
    "cross_check": true,
    "acceptable_variance": 0.05,
    "minimum_sources_to_compare": 3,
    "confidence_threshold": 0.8
  }
}