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.

Fetch Realm settings from elasticsearch.yml file in a static way on class load

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