Time Range Overlap
· One min read
(StartA <= EndB) and (EndA >= StartB)
Precondition:
- StartA < EndA
- StartB < EndB
Ref: https://stackoverflow.com/questions/325933/determine-whether-two-date-ranges-overlap
13 posts tagged with "C#"
View All Tags[MongoDB] Read preference in a transaction must be primary
· One min read
MongoDB 4.0.3 ReplicaSet
MongoDB.Driver for .net Core 2.7.3
在 Connection String 中配置了 readPreference=secondaryPreferred:
mongodb://user:password@mongod-1:27017,mongod-2:27017,mongod-3:27017/DBName?connect=replicaSet&readPreference=secondaryPreferred
然后在一个 Transaction 中读取数据报错："Read preference in a transaction must be primary", Transaction 中的读取不能使用 secondaryPreferred
