Elasticsearch初探
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- elasticsearch中的概念同传统数据库的类比如下：
Relational DB -> Databases -> Tables -> Rows -> Columns
Elasticsearch -> Indices -> Types -> Documents -> Fields
关系数据库 ⇒ 数据库 ⇒ 表 ⇒ 行 ⇒ 列(Columns)
Elasticsearch ⇒ 索引 ⇒ 类型 ⇒ 文档 ⇒ 字段(Fields)
- 导入数据API：
curl -XPOST \'http://localhost:9200/prd/xjb3/_bulk\' --data-binary @last.json
- last.json文件里面的数据格式形如：<数据地址：http://files.cnblogs.com/files/kevin-yuan/elasticsearchJsonData.zip>
{"index":{"_id":"1"}}
{"account_number":1,"balance":39225,"firstname":"Amber","lastname":"Duke","age":32,"gender":"M","address":"880 Holmes Lane","employer":"Pyrami","email":"amberduke@pyrami.com","city":"Brogan","state":"IL"}
{"index":{"_id":"6"}}
{"account_number":6,"balance":5686,"firstname":"Hattie","lastname":"Bond","age":36,"gender":"M","address":"671 Bristol Street","employer":"Netagy","email":"hattiebond@netagy.com","city":"Dante","state":"TN"}
{"index":{"_id":"13"}}
{"account_number":13,"balance":32838,"firstname":"Nanette","lastname":"Bates","age":28,"gender":"F","address":"789 Madison Street","employer":"Quility","email":"nanettebates@quility.com","city":"Nogal","state":"VA"}
- 排序查询API：
http://localhost:9200/prd/xjb3/_search?sort=balance:desc
- 指定返回条数：加上size=N即可
http://localhost:9200/prd/xjb3/_search?sort=amount:desc&size=100
资料：
[1] http://learnes.net/index.html 文档github地址：https://github.com/GavinFoo/elasticsearch-definitive-guide
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