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Posted to jira@kafka.apache.org by "Jun Rao (Jira)" <ji...@apache.org> on 2024/01/23 23:07:00 UTC

[jira] [Resolved] (KAFKA-15813) Improve implementation of client instance cache

     [ https://issues.apache.org/jira/browse/KAFKA-15813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jun Rao resolved KAFKA-15813.
-----------------------------
    Fix Version/s: 3.8.0
       Resolution: Fixed

Merged to the PR to trunk.

> Improve implementation of client instance cache
> -----------------------------------------------
>
>                 Key: KAFKA-15813
>                 URL: https://issues.apache.org/jira/browse/KAFKA-15813
>             Project: Kafka
>          Issue Type: Sub-task
>            Reporter: Apoorv Mittal
>            Assignee: Apoorv Mittal
>            Priority: Major
>             Fix For: 3.8.0
>
>
> In the current implementation the ClientMetricsManager uses LRU cache but we should alos support expiring stale clients i.e. client which haven't reported metrics for a while.
>  
> The KIP mentions: This client instance specific state is maintained in broker memory up to MAX(60*1000, PushIntervalMs * 3) milliseconds and is used to enforce the push interval rate-limiting. There is no persistence of client instance metrics state across broker restarts or between brokers 



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