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HomeDatabaseMysql Tutorial nosql篇mongodb初识与安装整理以及与关系型数据库对比

年前曾经写过关于mongodb的安装,但是后来有朋友弹窗说安装后遇到服务无法启动,在此将windows下以及Linux下的安装重新整理,顺便把会遇到的一些问题的解决方法写出来,其实mongodb的安装还是比较简单的. 随着互联网 WEB2.0 网站的兴起,传统关系型数据库力不从

年前曾经写过关于mongodb的安装,但是后来有朋友弹窗说安装后遇到服务无法启动,在此将windows下以及Linux下的安装重新整理,顺便把会遇到的一些问题的解决方法写出来,其实mongodb的安装还是比较简单的.

随着互联网WEB2.0网站的兴起,香港空间,传统关系型数据库力不从心

数据库高并发读写的需求

数据库并发负载非常高,网站空间,往往每秒数万次读写请求,磁盘IO瓶颈

海量数据的高效率访问的需求

对数亿甚至数十亿的记录高效查询

高可扩展性和高可用性的需求

传统SQL数据库时代对大数据的处理

单表单库时代:用户不停的增长、数据量增大导致压力过大

Replication及主从分离

分表分库时代:按业务key分片到不同的库,香港虚拟主机,通常按取模算法

增加维护成本,不停的重复劳动

需要的存储:高性能、分布式、易扩展

Nosql = Not Only SQL 根据海量数据特点补充关系型数据库的不足

NoSQL使用案例

MongoDB特点

面向集合(collection-orented)

 

模式自由(schema-free)

 

文档型(documents type)

 

MongoDB特征

面向集合存储易于存储对象类型的数据

 

MongoDB使用场景

适合作为信息基础设施的持久化缓存层

高效的实时性:MongoDB具备网站实时数据存储所需的复制及高度伸缩性

大尺寸、低价值的数据存储

 

MongoDB不使用场景

要求高度事务性的系统

传统的商业智能应用

复杂多表查询

 

MongDB的数据管理

 

MongoDB的主键策略

 

 

Linux下安装MongoDB 

[root@localhost mrms] # wget http://downloads.mongodb.org/linux/mongodb-linux-x86_64-1.4.4.tgz

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