ES(elasticsearch) springboot+es【深分页scrollId】

Posted 2023-02-28

参考技术A 详情见： https://www.elastic.co/guide/en/elasticsearch/client/java-rest/7.9/java-rest-high-create-index.html

详情见： https://www.elastic.co/guide/en/elasticsearch/client/java-rest/7.9/java-rest-high-indices-exists.html

详情见： https://www.elastic.co/guide/en/elasticsearch/client/java-rest/7.9/java-rest-high-delete-index.html

详情见： https://www.elastic.co/guide/en/elasticsearch/client/java-rest/7.9/java-rest-high-document-index.html

详情见： https://www.elastic.co/guide/en/elasticsearch/client/java-rest/7.9/java-rest-high-search.html

from-size浅分页适合数据量不大的情况（官网推荐是数据少于10000条）
详细请见官网： https://www.elastic.co/guide/cn/elasticsearch/guide/2.x/_query_phase.html
从下图可知es中有7条数据

16、深分页(scroll【还有一种search_after方法】)

scroll用的是快照模式，有个窗口期，都是基于这个窗口期的快照来做的查询，scrollId对应的就是这个快照，scrollId是不变的

1、 https://elasticsearch.cn/question/2935
2、 https://www.elastic.co/guide/cn/elasticsearch/guide/2.x/_fetch_phase.html
3、 https://www.jianshu.com/p/91d03b16af77