Query cache with ES 5.5

[IlCingalese]

Hi, i upgrade UR from 0.6 to 0.7 and i notice ES was very slow during query response.
Index size is 2GB with 3,958,758 docs like old index in ES 1.7.
When i run
curl -XGET 'localhost:9200/_stats/request_cache?human'
i se that 0 byte are used for chache query.. so i search on ES docs and found this..
https://www.elastic.co/guide/en/elasticsearch/reference/current/shard-request-cache.html

Requests where size is greater than 0 will not be cached even if the request cache is enabled in the index settings. To cache these requests you will need to use the query-string parameter detailed here.

So i edit EsClient.scala
and change search function url from
s"/$indexName/_search",
to
s"/$indexName/_search?request_cache=true",

run pio build relaunch deploy and notice a great improve on ES response time

and finally running
curl -XGET 'localhost:9200/_stats/request_cache?human'
i saw that query went stored.

Have fun

[pferrel]

Ok, thanks. Our speed tests run on random queries, which are usually the worst case. But this will speedup repeated/duplicate queries, which may be more the norm in deployed servers. Random queries run a fair bit faster with ES 5 vs ES 1.7.

But this might be worth a 0.7.1 release. Thanks much!