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[MN-10] Performance: Large EPUB Parsing #7

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opened 2026-05-05 12:15:04 +00:00 by mjasin · 0 comments
mjasin commented 2026-05-05 12:15:04 +00:00
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Full Detail: EpubService.cs currently uses EpubReader.ReadBookAsync(fullPath) (line 52), which loads the entire EPUB file into memory. This is a performance risk for large books (>10MB).

Action:

  • Refactor to use EpubReader.OpenBook(fullPath), which provides a handle to the file without reading all content.
  • Read only the specific ReadingOrder item requested by chapterIndex on demand.
**Full Detail:** `EpubService.cs` currently uses `EpubReader.ReadBookAsync(fullPath)` (line 52), which loads the entire EPUB file into memory. This is a performance risk for large books (>10MB). **Action:** - Refactor to use `EpubReader.OpenBook(fullPath)`, which provides a handle to the file without reading all content. - Read only the specific `ReadingOrder` item requested by `chapterIndex` on demand.
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mjasin (Marek Jaisński)
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Reference: mjasin/Nexus.Reader#7
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