43、Elasticsearch 桶聚合操作指南

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Elasticsearch 桶聚合操作指南

1. 数据准备

在进行桶聚合操作之前，我们可以复用之前使用过的数据集：书籍数据。你可以从 GitHub 页面获取该数据集并进行索引：数据集链接。以下是一个示例片段，供快速参考（注意，这不是完整的数据集）：

POST _bulk 
{"index":{"_index":"books","_id":"1"}} 
{"title": "Core Java Volume I â€“ Fundamentals","author": "Cay S. Horstmann","edition": 11, 
"synopsis": "Java reference book that offers a detailed explanation of various 
features of Core Java, including exception handling, interfaces, and lambda 
expressions. Significant highlights of the book include simple language, 
conciseness, and detailed examples.","amazon_rating": 4.6,"release_date": "2018-08-
27","tags": ["Programming Languages, Java Programming"]} 
{"ind