How to check used filed data cache for before running every query and after query

I want to monitor field data cache .. the growth .... .. command and plugin where and how to check

how to check used filled data cache for before running every query and after query.

I want to monitor field data cache .. the growth .... .. command and plugin where and how to check

how to check used filled data cache for before running every query and after query.

Check https://www.elastic.co/guide/en/elasticsearch/reference/current/cat-fielddata.html