In Elasticsearch 7.7 they got rid of a lot of that caching, and they now rely on OS-level disk caching for most index accesses: https://www.elastic.co/blog/sign

In Elasticsearch 7.7 they got rid of a lot of that caching, and they now rely on OS-level disk caching for most index accesses: https://www.elastic.co/blog/significantly-decrease-your-elasticsearch-heap-memory-usage https://www.elastic.co/blog/significantly-decrease-your-elas....