THPDFImportedResourceDedupStatistics Record

Reports the imported-resource deduplication cache state: the number of cached resources plus lifetime hit and miss counters

Declaration

THPDFImportedResourceDedupStatistics= record
  CachedResources: Integer;
  Hits: Int64;
  Misses: Int64;
end;

HPDFDoc

Field	Purpose
`CachedResources`	Number of resources held at present in the imported-resource cache
`Hits`	Lookups served by reusing an already imported resource rather than copying it again
`Misses`	Lookups that found no cached entry and carried out a fresh resource copy

Request it from THotPDF.GetImportedResourceDedupStatistics after merge or page-append operations to see how much duplication has been avoided
The counters are cumulative per THotPDF instance; THotPDF.ClearImportedResourceDedupCache empties the cache and sets both counters back to zero
A high hit ratio alongside a large CachedResources value indicates that page-level merging is reusing shared resources effectively