[jbosscache-issues] [JBoss JIRA] Resolved: (JBCACHE-1082) Optimise nodes for single elements
Manik Surtani (JIRA)
jira-events at lists.jboss.org
Fri Oct 3 11:11:21 EDT 2008
[ https://jira.jboss.org/jira/browse/JBCACHE-1082?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Manik Surtani resolved JBCACHE-1082.
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Fix Version/s: 3.0.0.GA
(was: 3.1.0)
Resolution: Done
Done using a SingletonMap and upgrading/downgrading where possible. Should result in a *much* smaller memory footprint and possibly faster access times (I say possibly because writes are a bit slower, in checking whether upgrading or downgrading the map is needed)
> Optimise nodes for single elements
> ----------------------------------
>
> Key: JBCACHE-1082
> URL: https://jira.jboss.org/jira/browse/JBCACHE-1082
> Project: JBoss Cache
> Issue Type: Feature Request
> Security Level: Public(Everyone can see)
> Affects Versions: 2.0.0.CR1
> Reporter: Manik Surtani
> Assignee: Manik Surtani
> Fix For: 3.0.0.GA
>
> Attachments: ReplicatedPojoPerfTest.java, UnversionedNode.patch.txt
>
>
> Many use cases just place a single object in a Node. Rather than going through the memory and performance penalties of using Maps for a single entry, we should:
> 1) Create a reference to 2 Objects for key and value, as well as a Map.
> 2) Only initialise/construct the Map if Node.putAll() is called, or when Node.put() is called with a second key/value pair
> 3) Otherwise just hold the key/value pair as direct object refs.
> Would affect UnversionedNode and WorkspaceNodeImpl.
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