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https://issues.apache.org/jira/browse/PDFBOX-3730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15939108#comment-15939108
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Tilman Hausherr commented on PDFBOX-3730:
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I'll do as suggested. Re the input stream, we buffer that one in full because
we need random access. Btw there's a method that uses a byte array so no need
to call load() with a ByteArrayInputStream.
> Encapsulate outputStream into BufferedOutputStream in PDDocument.save()
> -----------------------------------------------------------------------
>
> Key: PDFBOX-3730
> URL: https://issues.apache.org/jira/browse/PDFBOX-3730
> Project: PDFBox
> Issue Type: Improvement
> Components: Writing
> Affects Versions: 2.0.5
> Reporter: Peter Pinnau
> Priority: Minor
> Fix For: 2.0.6, 2.1.0
>
>
> I recognized very slow performance of PDDocument.save() with a
> FileOutputStream over a VPN connection.
> I did some testing and found out that using PDDocument.save(File file) solved
> the issue. So the BufferedInputStream makes the difference.
> Since my document API uses streams I encapsulate the OutputStream in a
> BufferedOutputStream if neccessary:
> if (!(outputStream instanceof BufferedOutputStream)) {
> outputStream = new BufferedOutputStream(outputStream);
> }
> pdDocument.save(outputStream);
> PDDocument.load() already does that with the InputStream. So I wonder if that
> would be an improvement for save(), too?
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