We are using Elasticsearch (v7.3.2) for our search solution and we use a Java API to get the search results from Elasticsearch. This is working fine.
In the Test environment we are not using Elasticsearch everyday. What I've noticed now is that if I do a new call to Elasticsearch this request is failing the first time. The next calls are going ok and give results.
It looks like Elasticsearch is going to "sleep mode" after a couple of hours not getting any requests. But I can't find anything about this in the documentation but I found another question here about the same issue.
Strange enough there is no clear answer from Elasticsearch.
So my question, is there some kind of sleep mode for Elasticsearch after some time? Can I disable this ?