[jira] [Created] (CASSANDRA-17998) Mutation Serialization Caching

["T Jake Luciani (Jira)" <ji...@apache.org>]

T Jake Luciani created CASSANDRA-17998:
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             Summary: Mutation Serialization Caching
                 Key: CASSANDRA-17998
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17998
             Project: Cassandra
          Issue Type: Improvement
          Components: Messaging/Internode
            Reporter: T Jake Luciani


A performance change that adds mutation serialization caching to avoid re-serializing the mutation for commitlog and nodes twice. 
 * Cached serialization for storage proxy and local commitlog
 * Cached deserialization for messaging service and local commitlog

This yields a non trivial perf gain (~7-10%) and latency drop (median)

[https://tjake.github.io/other/cached-mutations-report.html]

 

The cached buffer is stored by MessagingService version to avoid being used by differing nodes during upgrades.

 

Also, It avoids caching mutations larger than a threshold to avoid GC issues. 

 

 



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