get_image_cache_stats: Return image cache hit, miss, eviction, expiry, and size diagnostics.
Description
The bytes and entries values are estimates/current counts. Byte estimates
use object.size() (and a pixel-based lower bound for magick images), so
native ImageMagick allocations are not accounted for exactly.
Usage
get_image_cache_stats()get_image_cache_diagnostics()
Value
A list with base and transform named diagnostic vectors.