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|
# Fallback to primary if no secondary is fresh enough.
---
topology_description:
type: ReplicaSetWithPrimary
servers:
- &1
address: a:27017
type: RSPrimary
avg_rtt_ms: 5
lastUpdateTime: 0
maxWireVersion: 5
lastWrite: {lastWriteDate: {$numberLong: "1000001"}}
- &2
address: b:27017
type: RSSecondary
avg_rtt_ms: 5
lastUpdateTime: 0
maxWireVersion: 5
lastWrite: {lastWriteDate: {$numberLong: "1"}} # Very stale.
read_preference:
mode: SecondaryPreferred
maxStalenessSeconds: 120
suitable_servers:
- *1
in_latency_window:
- *1
|
