分析MongoDB中NoSQL数据库的数据复制机制

Yunhua Gu, Xing Wang, S. Shen, S. Ji, Jin Wang
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引用次数: 8

摘要

NoSQL数据库MongoDB的复制机制包括主从结构和Replica Set。在主服务器上执行写操作,从服务器会异步发送同步数据命令给主服务器更新数据。读操作只在主服务器上实现,提供强一致性;读操作在从服务器上实现,提供最终一致性。副本集是一组运行Mongod并存储相同数据副本的服务器,具有成员节点的自动故障转移和自动恢复功能。
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Analysis of data replication mechanism in NoSQL database MongoDB
The replication mechanism of NoSQL database MongoDB includes Master/Slave structure and Replica Set. Write operation implement on Master, Slaves will send the synchronize data command asynchronously to Master to update its data. Read operation just implement on Master to provide the strong consistency, while read operation implement on Slave to provide the eventual consistency. Replica set is a group of servers which run Mongod and store the copy of the same data with automatic failover and automatic recovery of member nodes.
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