When I browse to the page with un-cached photos, Zenphoto does cache/work correctly, it is just time consuming which means the response time is slower, often extremely so depending on the number of photos to be "cached/processed".
I turned on verbose logging for the script, which is how I noticed the line:
Will create 71298 new caches and refresh 0 existing caches (45417 already cached) for 38905 images (155 non-image files skipped)...
This "status" line is the same each time I run the script, and the files it processes are the same each time. As I mentioned the script does process many files each time. Ex:
Caching /var/www/html/cache/2000/Easter2000/P4230156_200_w80_h160_cw80_ch160_thumb.jpg
but they are never included in the "already cached list".
I also assume that the following: Scanning (✔✔✘) IMG_5101.JPG
indicates that 2 themes have this file cached and theme does not?
I checked in /var/log (Ubuntu image), but there are no errors indicated for any of the associated processes (MySQL, PHP, Apache,system, etc.).
I also "cleaned" the data base through the Zenphoto admin function. I also rebuilt the db meta data again using the Zenphoto admin function.
Storage is not an issue for me, latency and processing power (running in docker container on Synology NAS) is much more important to me.
When browsing photos which are pre-cached, the response is lightening fast! :)