[infinispan-issues] [JBoss JIRA] (ISPN-4219) Concern about proposed configuration

[Brett Wooldridge (JIRA)]

Brett Wooldridge created ISPN-4219:
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             Summary: Concern about proposed configuration
                 Key: ISPN-4219
                 URL: https://issues.jboss.org/browse/ISPN-4219
             Project: Infinispan
          Issue Type: Feature Request
          Components: Documentation-Core
            Reporter: Brett Wooldridge
            Assignee: Dan Berindei
            Priority: Minor


I'm writing on behalf of the HikariCP project.  We're thrilled to see HikariCP included as a configuration pool option for exoCR (though it would be great if it were the default):

http://docs.jboss.org/exojcr/1.16.0-GA/developer/en-US/html/chapter-Kernel.html#Kernel.HikariCP

Though we are concerned a bit about the example configuration given creating a pool of 600 connections.  We have a short but concise write-up on connection pool sizing where we make a compelling argument that a connection pool larger than a few dozen connections -- even for workloads of 10k simultaneous users running 20k transactions per second -- causes degradation of performance:

https://github.com/brettwooldridge/HikariCP/wiki/About-Pool-Sizing

We would be pleased if you read it, and if you agree, adjust the pool size in your example configuration.

Thanks,
The HikariCP Project Team


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