I have a custom realm plugin implemented to which I want to add caching until a certain time period and invalidate the cache. There is a CachingRealm interface which I can implement for the cache eviction APIs. I was looking at the example in the link below and I see that there is a different cache…

Caching Custom Realm Plugin tokens

TimV (Tim Vernum) August 30, 2018, 2:10am 6

Your Realm is a singleton. There is 1 instance of your realm per ES node, so a non-static cache is fine.

Topic		Replies	Views
Fetch Realm settings from elasticsearch.yml file in a static way on class load Elasticsearch	6	743	September 27, 2018
Custom Realm create roles dynamically using an external microservice for document level security Elasticsearch elastic-stack-security	4	465	June 16, 2021
Sample custom plugin fails to recognize "custom" type during load Elasticsearch elastic-stack-security	3	1012	July 6, 2017
Is there up-to-date documentation for implementing a custom Elasticsearch realm? Elasticsearch elastic-stack-security	5	597	July 31, 2020
Custom Realm: read properties from customRealm.yml Elasticsearch	5	909	July 5, 2017