John Hewson created PDFBOX-2323:
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Summary: More flexible image caching
Key: PDFBOX-2323
URL: https://issues.apache.org/jira/browse/PDFBOX-2323
Project: PDFBox
Issue Type: Improvement
Components: PDModel, Rendering
Affects Versions: 2.0.0
Reporter: John Hewson
Priority: Minor
Image caching in PDImageXObject can cause very high memory usage which has
resulted in issues PDFBOX-2313, PDFBOX-2310, PDFBOX-2101. Images are just so
large that the current "on size fits all" caching isn't working well.
Pushing responsibility for caching down to callers of PDImage#getImage() would
allow for use-case specific caching strategies, for example PDFRenderer could
cache small images for the duration of a document being rendered, rather than
having to re-create the PDImageXObject again for every page on which it
appears. Likewise caching of large images could be limited to a single page, or
not at all.
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