1{ 2 "heartbeatFrequencyMS": 25000, 3 "topology_description": { 4 "type": "ReplicaSetNoPrimary", 5 "servers": [ 6 { 7 "address": "a:27017", 8 "type": "RSSecondary", 9 "avg_rtt_ms": 5, 10 "lastUpdateTime": 0, 11 "maxWireVersion": 5, 12 "lastWrite": { 13 "lastWriteDate": { 14 "$numberLong": "125002" 15 } 16 }, 17 "tags": { 18 "data_center": "tokyo" 19 } 20 }, 21 { 22 "address": "b:27017", 23 "type": "RSSecondary", 24 "avg_rtt_ms": 5, 25 "lastUpdateTime": 0, 26 "maxWireVersion": 5, 27 "lastWrite": { 28 "lastWriteDate": { 29 "$numberLong": "2" 30 } 31 }, 32 "tags": { 33 "data_center": "nyc" 34 } 35 }, 36 { 37 "address": "c:27017", 38 "type": "RSSecondary", 39 "avg_rtt_ms": 5, 40 "lastUpdateTime": 0, 41 "maxWireVersion": 5, 42 "lastWrite": { 43 "lastWriteDate": { 44 "$numberLong": "1" 45 } 46 }, 47 "tags": { 48 "data_center": "nyc" 49 } 50 }, 51 { 52 "address": "d:27017", 53 "type": "RSSecondary", 54 "avg_rtt_ms": 5, 55 "lastUpdateTime": 0, 56 "maxWireVersion": 5, 57 "lastWrite": { 58 "lastWriteDate": { 59 "$numberLong": "2" 60 } 61 }, 62 "tags": { 63 "data_center": "tokyo" 64 } 65 } 66 ] 67 }, 68 "read_preference": { 69 "mode": "Secondary", 70 "maxStalenessSeconds": 150, 71 "tag_sets": [ 72 { 73 "data_center": "nyc" 74 } 75 ] 76 }, 77 "suitable_servers": [ 78 { 79 "address": "b:27017", 80 "type": "RSSecondary", 81 "avg_rtt_ms": 5, 82 "lastUpdateTime": 0, 83 "maxWireVersion": 5, 84 "lastWrite": { 85 "lastWriteDate": { 86 "$numberLong": "2" 87 } 88 }, 89 "tags": { 90 "data_center": "nyc" 91 } 92 } 93 ], 94 "in_latency_window": [ 95 { 96 "address": "b:27017", 97 "type": "RSSecondary", 98 "avg_rtt_ms": 5, 99 "lastUpdateTime": 0, 100 "maxWireVersion": 5, 101 "lastWrite": { 102 "lastWriteDate": { 103 "$numberLong": "2" 104 } 105 }, 106 "tags": { 107 "data_center": "nyc" 108 } 109 } 110 ] 111} 112