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Posted to oak-issues@jackrabbit.apache.org by "Amit Jain (JIRA)" <ji...@apache.org> on 2016/10/07 10:47:20 UTC
[jira] [Commented] (OAK-4837) Improved caching for DataStore
[ https://issues.apache.org/jira/browse/OAK-4837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15554782#comment-15554782 ]
Amit Jain commented on OAK-4837:
--------------------------------
Reworked caching work done at https://github.com/amit-jain/jackrabbit-oak/compare/trunk...amit-jain:OAK-4837
The patch is fully tested including running on Adobe AEM.
> Improved caching for DataStore
> ------------------------------
>
> Key: OAK-4837
> URL: https://issues.apache.org/jira/browse/OAK-4837
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: blob
> Reporter: Amit Jain
> Assignee: Amit Jain
> Labels: performance
>
> The current CachingDataStore implementation used with S3DataStore has certain problems:
> * Lack of stats to show hit rate/miss rates for files being requested for downloads
> * Lack of stats for async uploads
> * CachingDataStore starts proactively downloading files in the background when a call to {{getRecord}} is made.
> * Async upload functionality leaks into Backend implementations, LocalCache classes.
> * The call to {{DataStore#getRecord()}} which makes multiple calls to backends which is problematic for S3 (i.e. when not being served bu cache)
> * There is some functionality which is not used with Oak like length cache, sync/async touch etc. which can be removed and code simplified.
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