Github user ambud commented on the issue:
https://github.com/apache/storm/pull/1783
@revans2 @vesense @ben-manes Thanks for the valuable feedback, I am looking
into integration with Caffeine. Should have a new commit soon.
@revans2 Indeed the intention is to have the cache tuned based on topology.
The ideal use case is where caching actually makes sense and certain keys may
have a higher hit frequency then others.
Ideally this bolt should be used with FieldGrouping when caching is enabled
so cache misses minimal. Something to be kept in mind is distribution of keys
(executor balancing).
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