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https://issues.apache.org/jira/browse/CASSANDRA-20864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Isaac Reath updated CASSANDRA-20864:
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Test and Documentation Plan:
* Added unit tests for the new metrics.
* PR contains updated documentation which describes the new metric.
Status: Patch Available (was: In Progress)
> Expose Prepared Statement Cache Size Metric (in bytes)
> ------------------------------------------------------
>
> Key: CASSANDRA-20864
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20864
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Observability/Metrics
> Reporter: Isaac Reath
> Assignee: Isaac Reath
> Priority: Normal
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Currently, Cassandra exposes the count of prepared statements through a
> metric, PreparedStatementsCount. However, the maximum cache size is
> configured in terms of bytes through the configuration
> prepared_statements_cache_size, creating a mismatch between the exposed
> metrics and the configuration units. This discrepancy makes it difficult for
> operators to anticipate when the cache is approaching its configured limit.
> The scope of this ticket is to add a new metric, PreparedStatementsCacheSize,
> which will expose the size of the cache in bytes to improve the observability
> of the size of the prepared statement cache.
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