Julian Sedding created SLING-7577:
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             Summary: FS Resource Provider slow due to frequent file stat access
                 Key: SLING-7577
                 URL: https://issues.apache.org/jira/browse/SLING-7577
             Project: Sling
          Issue Type: Improvement
          Components: JCR
    Affects Versions: File System Resource Provider 2.1.12
            Reporter: Julian Sedding
            Assignee: Julian Sedding
             Fix For: File System Resource Provider 2.1.14


The file-system resource provider is relatively slow, because it frequently 
checks for file existence, for whether a file is a directory or a file and for 
the last modified time.

Normally this is not an issue, but in a setup where context aware 
configurations are used via FSRP, there are a lot of lookups for non-existing 
resources, which are not cached in any way. In the scenario I experienced, the 
same lookups occurred frequently during a single HTTP request and caused 
page-rendering to take ~5s.

To improve this, I propose to cache file stats, including non-existence of a 
file.



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