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https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14615366#comment-14615366
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Jonathan Ellis commented on CASSANDRA-9739:
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Our long term plan may involve getting rid of counter cache entirely. /cc
[~iamaleksey]
> Migrate counter-cache to be fully off-heap
> ------------------------------------------
>
> Key: CASSANDRA-9739
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9739
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: Robert Stupp
> Fix For: 3.x
>
>
> Counter cache still uses a concurrent map on-heap. This could go to off-heap
> and feels doable now after CASSANDRA-8099.
> Evaluation should be done in advance based on a POC to prove that pure
> off-heap counter cache buys a performance and/or gc-pressure improvement.
> In theory, elimination of on-heap management of the map should buy us some
> benefit.
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