{
    "summary": [
        {
            "name": "customer_balance",
            "title": "客户余额缓存",
            "primary": [
                "id"
            ],
            "classification": "cache"
        }
    ],
    "fields": [
        {
            "name": "id",
            "type": "str",
            "nullable": false,
            "default": "",
            "comment": "主键，即 customer_id",
            "length": 32
        },
        {
            "name": "balance",
            "type": "double",
            "nullable": false,
            "default": 0.0,
            "comment": "当前余额",
            "length": 15,
            "dec": 4
        },
        {
            "name": "currency",
            "type": "str",
            "nullable": false,
            "default": "CNY",
            "comment": "货币单位",
            "length": 8
        },
        {
            "name": "credit_limit",
            "type": "double",
            "nullable": true,
            "default": null,
            "comment": "信用额度",
            "length": 15,
            "dec": 4
        },
        {
            "name": "last_recharge",
            "type": "datetime",
            "nullable": true,
            "default": null,
            "comment": "最后充值时间"
        },
        {
            "name": "last_consumption",
            "type": "datetime",
            "nullable": true,
            "default": null,
            "comment": "最后消费时间"
        },
        {
            "name": "status",
            "type": "str",
            "nullable": false,
            "default": "active",
            "comment": "状态: active/suspended/arrears",
            "length": 16
        },
        {
            "name": "sync_version",
            "type": "str",
            "nullable": true,
            "default": "",
            "comment": "同步版本号",
            "length": 32
        },
        {
            "name": "cached_at",
            "type": "datetime",
            "nullable": false,
            "default": "CURRENT_TIMESTAMP",
            "comment": "缓存更新时间"
        }
    ],
    "idxfields": [
        {
            "name": "idx_status",
            "fields": [
                "status"
            ],
            "unique": false
        },
        {
            "name": "idx_balance",
            "fields": [
                "balance"
            ],
            "unique": false
        }
    ],
    "codes": []
}