1. Cache operation
The server enables or disables the query cache
index.requests.cache.enable
The client enables or disables the query cache
GET /my-index/_search?request_cache=true
to clear the cache
POST /_cache/clear
2. Reference link
https://www.elastic.co/guide/en/elasticsearch/reference/2.3/shard-request-cache.html
https://www.elastic.co/guide/en/elasticsearch/reference/current /shard-request-cache.html
https://blog.csdn.net/a745233700/article/details/118055871
https://developer.aliyun.com/article/972144
https://developer.aliyun.com/article/801995
https://www.easyice.cn/archives/367
3. Troubleshoot related issues
https://blog.csdn.net/aaronhadoop/article/details/131646263