[jira] [Updated] (CASSANDRA-15764) Optimize logging with lazy log parameter evaluation

["Yifan Cai (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-15764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yifan Cai updated CASSANDRA-15764:
----------------------------------
    Status: Resolved  (was: Open)

> Optimize logging with lazy log parameter evaluation
> ---------------------------------------------------
>
>                 Key: CASSANDRA-15764
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15764
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Observability/Logging
>            Reporter: Yifan Cai
>            Assignee: Yifan Cai
>            Priority: Normal
>
> Multiple logging statements in the source evaluate methods and use the return values as log parameter. 
> It does no harm when the log level permits for the statement. 
> However, for the logs that are permitted, the evaluation is a wastes of CPU. 
> The log parameters are not needed, but still being evaluated!
> For such cases, lazy evaluation (by leveraging lambda) can be introduced to skip competing the string parameter. 



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