Elasticsearch 7 核心概念-白红宇

Elasticsearch 7 核心概念

阅读量：373 次

发布时间：2019-03-05

本文共 292 字，大约阅读时间需要 1 分钟。

Cluster 集群, 由一组 es 实例组成

Node 节点, 单个 es 运行的实例

Index 索引, 类似于数据表 (ES7 之前一般类似于数据库, 不过 ES7 后 type 概念废弃)

Type 类型, ES7 后已经废弃, 之前用作类似数据表, 不过由于相同 Index 下, 不同 Type 的 mapping 其实是共享的, 并不是独立的, 所以 ES 把 Type 概念废弃, 固定 Type 值是 _doc

Mapping 映射, 类似于数据表的字段定义, 包括数据类型

Field 字段, 类似于数据表的字段

Document 文档, 类似于数据表中的一条数据

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