如何使用C＃驱动程序针对mongo设置单个查询的readPreference
[英]How do you set the readPreference for a single query against mongo using the c# driver
问题描述
I have an application using a number of different mongo databases and 99% of the time it needs to read from the primary of the replica set but I have a couple reporting queries that pull back a lot of data and are not covered by indexes and I would like them to run against a secondary. 
我有一个应用程序使用了许多不同的mongo数据库，并且有99％的时间需要从副本集的主数据库中读取数据，但是我有几个报告查询会拉回大量数据，并且不包含在索引中，我希望他们与中学竞争。 Is there any way to specify for a single query that it should have a read preference of secondary. 有什么方法可以为单个查询指定应具有次要读取优先级的查询。 I am wanting to avoid having more connection strings as I already have near a dozen in the application. 我想避免有更多的连接字符串，因为我在应用程序中已经有十几个了。
1 个解决方案
解决方案1
3 已采纳 2015-09-26 00:23:56
为此，集合中有几个WithXXX方法。
collection.WithReadPreference(ReadPreference.SecondaryPreferred).Find(...)
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