数据库分表垂直水平的相关内容

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文章 2018-08-08 来自：开发者社区

原文:数据库之分库分表-垂直？水平？一、数据库瓶颈　　不管是IO瓶颈，还是CPU瓶颈，最终都会导致数据库的活跃连接数增加，进而逼近甚至达到数据库可承载活跃连接数的阈值。在业务Service来看就是，可用数据库连接少甚至无连接可用。接下来就可以想象了吧（并发量、吞吐量、崩溃）。 IO瓶颈第一种：磁盘读IO瓶颈，热点数据太多，数据库缓存放不下，每次查询时会产生大量的随机IO，降低查询速度 -&a...

文章 2018-08-08 来自：开发者社区

数据库之分库分表-垂直？水平？

一、数据库瓶颈　　不管是IO瓶颈，还是CPU瓶颈，最终都会导致数据库的活跃连接数增加，进而逼近甚至达到数据库可承载活跃连接数的阈值。在业务Service来看就是，可用数据库连接少甚至无连接可用。接下来就可以想象了吧（并发量、吞吐量、崩溃）。 1、IO瓶颈第一种：磁盘读IO瓶颈，热点数据太多，数据库缓存放不下，每次查询时会产生大量的随机IO，降低查询速度 -> 分库和垂直分表。第二种：....

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