# If users configure a longer ``heartbeatFrequencyMS`` than the default,
# ``maxStalenessSeconds`` might have a larger minimum.
---
heartbeatFrequencyMS: 120000 # 120 seconds.
topology_description:
type: ReplicaSetWithPrimary
servers:
- &1
address: a:27017
type: RSPrimary
avg_rtt_ms: 5
lastUpdateTime: 0
maxWireVersion: 5
lastWrite: {lastWriteDate: {$numberLong: "1"}}
- &2
address: b:27017
type: RSSecondary
avg_rtt_ms: 50 # Too far.
lastUpdateTime: 0
maxWireVersion: 5
lastWrite: {lastWriteDate: {$numberLong: "1"}}
read_preference:
mode: Nearest
maxStalenessSeconds: 130 # OK, must be 120 + 10 = 130 seconds.
suitable_servers:
- *1
- *2
in_latency_window:
- *1