随着业务数据的增加，原有的数据库性能瓶颈凸显，以此就需要对数据库进行分库分表操作。为啥需要分库分表随着业务数据的增加，原有的数据库性能瓶颈凸显，主要体现在以下两个方面。IO瓶颈IO瓶颈主要有以下几种情况：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IO，降低查询速度。这种情况适合采用分库和垂直分表。第二种：网络IO瓶颈，请求的数据太多，网络带宽不够。这种情况适合....

问答 2020-06-19 来自：开发者社区

为什么要分库分表（设计高并发系统的时候，数据库层面该如何设计）？【Java问答】41期

面试题为什么要分库分表（设计高并发系统的时候，数据库层面该如何设计）？用过哪些分库分表中间件？不同的分库分表中间件都有什么优点和缺点？你们具体是如何对数据库如何进行垂直拆分或水平拆分的？面试官心理分析其实这块肯定是扯到高并发了，因为分库分表一定是为了支撑高并发、数据量大两个问题的。而且现在说实话，尤其是互联网类的公司面试，基本上都会来这么一下，分库分表如此普遍的技术问题，不问实在是不...

问答 2020-06-08 来自：开发者社区

在关系型数据库的分库分表方面，有没有好的分库分表的中间件和成熟的方案，对已有系统的改造，建议

文章 2020-04-10 来自：开发者社区

分库分表 PK NewSQL数据库！

云栖号资讯：【点击查看更多行业资讯】在这里您可以找到不同行业的第一手的上云资讯，还在等什么，快来！最近与同行科技交流，经常被问到分库分表与分布式数据库如何选择，网上也有很多关于中间件+传统关系数据库（分库分表）与NewSQL分布式数据库的文章，但有些观点与判断是我觉得是偏激的，脱离环境去评价方案好坏其实有失公允。本文通过对两种模式关键特性实现原理对比，希望可以尽可能客观、中立的阐明各自真实的....

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