es

1.es 架构

 2. es 工作原理

 3. 命令：

## es scroll 游标查询全部数据
POST product/doc/_search?scroll=1m
{
  "query": {
    "match_all": {}
  },
  "size": 2
}

POST _search/scroll
{
  "scroll":"1m",
  "scroll_id":"DnF1ZXJ5VGhlbkZldGNoAwAAAAAAAABPFk4yT2o5akF3UXpleFh3YWV5YS1SSVEAAAAAAAAAUBZOMk9qOWpBd1F6ZXhYd2FleWEtUklRAAAAAAAAAFEWTjJPajlqQXdRemV4WHdhZXlhLVJJUQ=="
}

DELETE /_search/scroll
{
    "scroll_id" : "DnF1ZXJ5VGhlbkZldGNoAwAAAAAAAABAFk4yT2o5akF3UXpleFh3YWV5YS1SSVEAAAAAAAAAQRZOMk9qOWpBd1F6ZXhYd2FleWEtUklRAAAAAAAAAEIWTjJPajlqQXdRemV4WHdhZXlhLVJJUQ=="
}

DELETE /_search/scroll/_all

参考文档：https://www.cnblogs.com/wangzhuxing/p/9569727.html