March 2021
Intermediate to advanced
265 pages
6h 50m
Chinese
Content preview from Presto实战
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4
｜
第
1
章
日志
文件
数据湖
外部对象存储
内部对象存储
流量数据
文档
数据库
物联网
指标
键值存储
NoSQL
数据库
搜索索引
数据仓库
测试报告
这么多问题！
图 1-1：大数据可能会让人难以招架
此外，这些系统不允许你使用标准工具来查询和检视数据。面向特定系统的查询语言和分析
工具比比皆是。与此同时，你的商业分析师已习惯使用业界标准——
SQL
，无数强大的工具
依赖
SQL
来分析数据、创建仪表盘、制作富文本报告以及完成其他商业智能工作。
数据分散在各个孤岛上，其中有些系统甚至不能提供满足分析所需的查询性能，其他一些
系统则将数据存储在单一庞大的系统上，因而不能像现代的云应用程序一样横向扩展。没
有这样的能力，你就只能缩小潜在的使用场景和用户数量，因此降低了数据的实用价值。
对全世界的组织来说，创建和维护大型专用数据仓库的传统方法成本高昂。通常，对很多
用户和使用模式来说，这种方法也显得缓慢且笨拙。
显而易见的是，一个系统如果可以释放所有这些价值，就将带来巨大的机会。
1.2
Presto
来救场
Presto
能解决上述所有问题。通过支持不同系统上的联邦查询、并行查询和横向集群扩展
等功能，它还为我们提供了更多可能性。
Presto
项目的标志如图
1-2
所示。
图 1-2：Presto 的标志
Presto
介绍
｜
5
Presto
是一个开源的分布式 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.