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https://issues.apache.org/jira/browse/PDFBOX-2882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14630124#comment-14630124
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John Hewson commented on PDFBOX-2882:
-------------------------------------

As far as I can see, it's possible to remove the AtomicBoolean, all of the 
volatile keywords, and the synchronized blocks appearing partway through 
methods and simply replace them with "synchronized" in the method declarations.

> Improve performance when using scratch file
> -------------------------------------------
>
>                 Key: PDFBOX-2882
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2882
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: Parsing
>    Affects Versions: 2.0.0
>            Reporter: Timo Boehme
>            Assignee: Timo Boehme
>            Priority: Minor
>         Attachments: ScratchFile.java, ScratchFileBuffer.java
>
>
> The current scratch file implementation uses many direct I/O calls which 
> slows down parsing compared with in-memory scratch buffer considerably.



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