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https://issues.apache.org/jira/browse/JCS-3?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron Smuts closed JCS-3.
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This enhancement has been applied for some time now. Closing issue.
> File Optimization expensive in memory and disk space
> ----------------------------------------------------
>
> Key: JCS-3
> URL: https://issues.apache.org/jira/browse/JCS-3
> Project: JCS
> Issue Type: Bug
> Components: Indexed Disk Cache
> Environment: Any
> Reporter: Peter Schwarz
> Assigned To: Aaron Smuts
> Fix For: jcs-1.2.7.9
>
> Attachments: indexed-disk.patch, indexed-disk.patch,
> IndexedDisk.java, IndexedDiskCache.java, IndexedDiskDumper.java,
> IndexedDiskElementDescriptor.java, StandardSerializer.java
>
>
> The file optimization for the IndexedDiskCache creates a duplicate of the
> cache file. In deployments with large volumes of data this doubling of disk
> usage can be problematic. If this could be done inside the single file, it
> would be easier on the disk.
> Additionally, OutOfMemoryErrors are common due to the deserializing and
> reserializing of the objects in the cache. Given the the size in bytes of
> each object in the file is known (it's part of the record), the objects could
> be moved in the file without recreating an instance of the object in memory.
> The use of a single buffer for reading and then writing the data (to either
> the same file or a new one) would be much more efficient for handling this
> optimization.
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