elasticsearch_base.md

ElasticSearch

• 基础内容

  • 索引管理

    • 新建索引
    • 更新副本
    • 读写权限
    • 查看索引
    • 删除索引
    • 索引的打开与关闭
    • 复制索引
    • 收缩索引
    • 索引别名

  • 文档管理

    • 新建文档
    • 获取文档
    • 更新文档
    • 查询更新
    • 删除文档
    • 查询删除
    • 批量操作
    • 版本控制
    • 路由机制

  • 映射

    • 映射分类
    • 动态映射
    • 日期检测
    • 静态映射
    • 字段类型
    • 元字段
    • 映射参数
    • 映射模板

  • 搜索与过滤

    • 搜索机制
    • 全文查询
    • 词项查询
    • 复合查询
    • 嵌套查询
    • 位置查询
    • 特殊查询
    • 搜索高亮
    • 搜索排序

  • 聚合

    • 指标聚合
    • 桶聚合

  • cat api

  • cluster api

基础内容

索引管理

1. 新建索引
2. 更新副本
3. 读写权限
4. 查看索引
5. 删除索引
6. 索引的打开与关闭
7. 复制索引
8. 收缩索引
9. 索引别名

文档管理

1. 新建文档
2. 获取文档
3. 更新文档
4. 查询更新
5. 删除文档
6. 查询删除
7. 批量操作
8. 版本控制
9. 路由机制

映射

1. 映射分类
2. 动态映射
3. 日期检测
4. 静态映射
5. 字段类型
6. 元字段
7. 映射参数
8. 映射模板

搜索与过滤

示例数据 books.json

{"index":{ "_index": "books", "_type": "IT", "_id": "1" }}
{"id":"1","title":"Java编程思想","language":"java","author":"Bruce Eckel","price":70.20,"publish_time":"2007-10-01","description":"Java学习必读经典,殿堂级著作！赢得了全球程序员的广泛赞誉。"}

{"index":{ "_index": "books", "_type": "IT", "_id": "2" }}
{"id":"2","title":"Java程序性能优化","language":"java","author":"葛一鸣","price":46.50,"publish_time":"2012-08-01","description":"让你的Java程序更快、更稳定。深入剖析软件设计层面、代码层面、JVM虚拟机层面的优化方法"}

{"index":{ "_index": "books", "_type": "IT", "_id": "3" }}
{"id":"3","title":"Python科学计算","language":"python","author":"张若愚","price":81.40,"publish_time":"2016-05-01","description":"零基础学python,光盘中作者独家整合开发winPython运行环境，涵盖了Python各个扩展库"}

{"index":{ "_index": "books", "_type": "IT", "_id": "4" }}
{"id":"4","title":"Python基础教程","language":"python","author":"Helant","price":54.50,"publish_time":"2014-03-01","description":"经典的Python入门教程，层次鲜明，结构严谨，内容翔实"}

{"index":{ "_index": "books", "_type": "IT", "_id": "5" }}
{"id":"5","title":"JavaScript高级程序设计","language":"javascript","author":"Nicholas C. Zakas","price":66.40,"publish_time":"2012-10-01","description":"JavaScript技术经典名著"}

准备工作

# 新建索引
PUT books
{
  "settings": {
    "number_of_replicas": 1,
    "number_of_shards": 3
  },
  "mappings": {
    "IT": {
      "properties": {
        "id": {
          "type": "long"
        },
        "title": {
          "type": "text",
          "analyzer": "ik_max_word"
        },
        "language": {
          "type": "keyword"
        },
        "author": {
          "type": "keyword"
        },
        "price": {
          "type": "double"
        },
        "publish_time": {
          "type": "date",
          "format": "yyyy-MM-dd"
        },
        "description": {
          "type": "text",
          "analyzer": "ik_max_word"
        }
      }
    }
  }
}

# 批量导入数据
curl -XPOST "http://localhost:9200/_bulk?pretty" --data-binary books.json

1. 搜索机制

########################
GET books/_search
{
  "query" : {
    "match_all" : {}
  }
}

########################
GET books/_search
{
  "query" : {
    "term" : {
      "title": "思想"
    }
  }
}

########################
GET books/_search
{
  "query" : {
    "term" : {
      "title": "思想"
    }
  },
  "from": 0,
  "size": 100,
  "_source": ["title", "author"],
  "version": true,
  "min_score": 0.6,
  "highlight":{
    "fields":{
      "title" : {}
    }
  }
}

2. 全文查询

########################
GET books/_search
{
  "query" : {
    "match" : {
      "title": {
        "query": "java 编程思想",
        "operator": "or"
      }
    }
  }
}

3. 词项查询

########################
GET books/_search
{}

4. 复合查询

########################
GET books/_search
{}

5. 嵌套查询

########################
GET books/_search
{}

6. 位置查询

########################
GET books/_search
{}

7. 特殊查询

########################
GET books/_search
{}

8. 搜索高亮

########################
GET books/_search
{}

9. 搜索排序

########################
GET books/_search
{}

聚合

1. 指标聚合
2. 桶聚合

cat api

cluster api