[jira] [Commented] (DERBY-6733) Implement an MBean for monitoring caches

["Bryan Pendleton (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-6733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14732108#comment-14732108 ] 

Bryan Pendleton commented on DERBY-6733:
----------------------------------------

I was able to access all three of these beans using JConsole without problems.

It took me a little while to figure out that HitCount and MissCount and EvictionCount
weren't ever going to be non-zero unless I set CollectAccessCounts to true.

Probably we will want to improve the documentation, over time, to describe
how to use the bean information effectively to monitor a Derby system.

Perhaps we could also put some amount of documentation into the bean
attribute descriptions themselves? In JConsole, the bean attribute descriptions
all simply read "Attribute exposed for management"; is that text that we provided
or is that automatically generated by JConsole?

> Implement an MBean for monitoring caches
> ----------------------------------------
>
>                 Key: DERBY-6733
>                 URL: https://issues.apache.org/jira/browse/DERBY-6733
>             Project: Derby
>          Issue Type: Improvement
>          Components: JMX
>    Affects Versions: 10.12.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>             Fix For: 10.12.0.0
>
>         Attachments: d6733-1a-page-and-container.diff, d6733-2a-statement-cache.diff, d6733-3a-adminguide.diff, d6733-4a-test-permissions.diff, radminjmxintro.html
>
>
> Add an MBean that allows users to monitor Derby's CacheFactory instances, as discussed in DERBY-5772.



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