1{
2  "topology_description": {
3    "type": "ReplicaSetNoPrimary",
4    "servers": [
5      {
6        "address": "b:27017",
7        "avg_rtt_ms": 5,
8        "type": "RSSecondary",
9        "tags": {
10          "data_center": "nyc"
11        }
12      },
13      {
14        "address": "c:27017",
15        "avg_rtt_ms": 100,
16        "type": "RSSecondary",
17        "tags": {
18          "data_center": "nyc"
19        }
20      }
21    ]
22  },
23  "operation": "read",
24  "read_preference": {
25    "mode": "Nearest",
26    "tag_sets": [
27      {
28        "data_center": "nyc"
29      }
30    ]
31  },
32  "suitable_servers": [
33    {
34      "address": "b:27017",
35      "avg_rtt_ms": 5,
36      "type": "RSSecondary",
37      "tags": {
38        "data_center": "nyc"
39      }
40    },
41    {
42      "address": "c:27017",
43      "avg_rtt_ms": 100,
44      "type": "RSSecondary",
45      "tags": {
46        "data_center": "nyc"
47      }
48    }
49  ],
50  "in_latency_window": [
51    {
52      "address": "b:27017",
53      "avg_rtt_ms": 5,
54      "type": "RSSecondary",
55      "tags": {
56        "data_center": "nyc"
57      }
58    }
59  ]
60}
61