update book.json

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liujianhuan 2020-03-24 11:57:32 +08:00
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<!-- toc -->
### Druid是什么
Apache Druid是一个实时分析型数据库旨在对大型数据集进行快速的查询分析"[OLAP](https://en.wikipedia.org/wiki/Online_analytical_processing)"查询)。Druid最常被当做数据库来用以支持实时摄取、高性能查询和高稳定运行的应用场景同时Druid也通常被用来助力分析型应用的图形化界面或者当做需要快速聚合的高并发后端APIDruid最适合应用于面向事件类型的数据。

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### 快速开始
在本快速入门教程中我们将下载Druid并将其安装在一台服务器上完成初始安装后向集群中加载数据。

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}