Реальные события подключения и снимки топологии

[
    {
        "sku": "CUP",
        "price": 500
    }
]

{
    "type": "Single",
    "readable": true,
    "writable": true,
    "servers": [
        {
            "host": "127.0.0.1",
            "port": 27075,
            "type": "Standalone"
        }
    ]
}

[
    {
        "event": "topologyOpening",
        "topologyId": "6ae39bd01fa8de006c0c1ef0"
    },
    {
        "event": "topologyChanged",
        "topologyId": "6ae39bd01fa8de006c0c1ef0",
        "before": {
            "type": "Unknown",
            "readable": false,
            "writable": false,
            "servers": []
        },
        "after": {
            "type": "Single",
            "readable": false,
            "writable": false,
            "servers": []
        }
    },
    {
        "event": "serverOpening",
        "topologyId": "6ae39bd01fa8de006c0c1ef0",
        "host": "127.0.0.1",
        "port": 27075
    },
    {
        "event": "serverHeartbeatStarted",
        "host": "127.0.0.1",
        "port": 27075
    },
    {
        "event": "serverHeartbeatSucceeded",
        "host": "127.0.0.1",
        "port": 27075,
        "durationMicros": 332
    },
    {
        "event": "serverChanged",
        "topologyId": "6ae39bd01fa8de006c0c1ef0",
        "host": "127.0.0.1",
        "port": 27075
    },
    {
        "event": "topologyChanged",
        "topologyId": "6ae39bd01fa8de006c0c1ef0",
        "before": {
            "type": "Single",
            "readable": false,
            "writable": false,
            "servers": []
        },
        "after": {
            "type": "Single",
            "readable": true,
            "writable": true,
            "servers": [
                {
                    "host": "127.0.0.1",
                    "port": 27075,
                    "type": "Standalone"
                }
            ]
        }
    },
    {
        "event": "serverClosed",
        "topologyId": "6ae39bd01fa8de006c0c1ef0",
        "host": "127.0.0.1",
        "port": 27075
    },
    {
        "event": "topologyChanged",
        "topologyId": "6ae39bd01fa8de006c0c1ef0",
        "before": {
            "type": "Single",
            "readable": true,
            "writable": true,
            "servers": [
                {
                    "host": "127.0.0.1",
                    "port": 27075,
                    "type": "Standalone"
                }
            ]
        },
        "after": {
            "type": "Unknown",
            "readable": false,
            "writable": false,
            "servers": []
        }
    },
    {
        "event": "topologyClosed",
        "topologyId": "6ae39bd01fa8de006c0c1ef0"
    }
]

"Три вызова проверяют один снимок Single. Карточка CUP действительно запрошена один раз; три режима не означают три прочитанные реплики"