Aerospike数据建模和查询

Question

可以说我在JAVA中有以下模型

class Shape {
    String type;
    String color;
    String size;
}

并说我有以下基于上述模型的数据.

Triangle, Blue, Small
Triangle, Red, Large
Circle, Blue, Small
Circle, Blue, Medium
Square, Green, Medium
Star, Blue, Large

我想回答以下问题

Given the type Circle how many unique colors?
    Answer: 1
Given the type Circle how many unique sizes?
    Answer: 2

Given the color Blue how many unique shapes?
    Answer: 2
Given the color Blue how many unique sizes?
    Answer: 3

Given the size Small how many unique shapes?
    Answer: 2
Given the size Small how many unique colors?
    Answer: 1

我想知道我是否应该按照以下方式建模......

set: shapes -> key: type -> bin(s): list of colors, list of sizes
set: colors -> key: color -> bin(s): list of shapes, list of sizes
set: sizes -> key: size -> bin(s): list of shapes, list of colors

或者有更好的方法吗？如果我这样做,我需要3倍的存储空间.

我还希望每套都有数十亿条目.顺便说一下模型已被编辑以保护inoncent代码;)

Answer 1

NoSQL中的数据建模总是关于您计划如何检索数据,吞吐量和延迟.

有几种方法可以对这些数据进行建模; 最简单的是模仿每个字段变为Bin的类结构.您可以在每个bin上定义Secondary Indexes并使用Aggregation Queries来回答您的问题(上图).

但这只是一种方式; 您可能需要使用不同的数据模型来满足延迟和吞吐量的因素.