Web1. 什么是MongoDB # MongoDB是一个基于分布式文件存储的开源数据库系统 MongoDB 将数据存储为一个文档,数据结构由键值(key=>value)对组成。MongoDB 文档类似于 JSON 对象。字段值可以包含其他文档,数组及文档数组。 2. MongoDB安装 # 2.1 windows安装 # Windows官方安装指南 ... WebThe write concern. This may be an integer denoting the number of servers required to acknowledge the write, or a string mode (e.g. "majority").
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WebsetWriteConcern. public void setWriteConcern (com.mongodb.WriteConcern writeConcern) Parameters: writeConcern - See Also: MongoClientSettings.Builder.writeConcern(WriteConcern) setRetryWrites. public void setRetryWrites (@Nullable Boolean retryWrites) Parameters: retryWrites - WebsetWriteConcern. public void setWriteConcern (WriteConcern writeConcern) Set the WriteConcern for this collection. Will be used for writes to this collection. Overrides any setting of write concern at the DB level. Parameters: writeConcern - WriteConcern to use MongoDB documentation bradford jewelley company
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Web8 Dec 2011 · In the first post I talked about how indexes affect the write speed in MongoDB. In this second post I will share my findings on how different write concerns affect the write speed on a single node. Please refer to the first post for the setup related information. A write concern controls the behavior of write operation and gives developers the choice to … Webpublic MongoClientOptions.Builder applicationName (java.lang.String applicationName) Sets the logical name of the application using this MongoClient. The application name may be used by the client to identify the application to the server, for use in server logs, slow query logs, and profile collection. Parameters: Webimport com.mongodb.casbah.Imports._ // ... def setWriteConcern(concern: WriteConcern): Unit = underlying.setWriteConcern(concern) 基本上它們將所有導入包裝到一個公共的Import對象中,然后只使用import com.mycompany.Imports._ Doobie做了類似的事情,大多數最終用戶只是import doobie.imports._ bradford johnson actor