Cache file issue，’/var/lib/nonlyoffice/documentserver/app_data/cache/files‘

[DDDJing]

hi， I deployed with Docker and attempted to persist the cache files in the ’/var/lib/nonlyoffice/documentserver/app_data/cache/files‘ directory to avoid file loss. However, I know this is the directory where the cache files are stored, and I want to know under what circumstances files in the directory will be cleared. What is the caching mechanism? I cannot find any documentation about this information