One thing I forgot to mention above is that these two flags wil also be required for the mount command:
Usually these values are quite low, invalidating the cache after a short time. These values are low by default because not all backends have polling, but on a backend with polling we can keep the cache data indefinitely and rely on updates to keep the information fresh instead of re-gathering the full listing every time we need them.
The specifics numbers here are just an example - I've just set them to be a year to effectively "disable" them. Without setting these timers to a high value it won't make much sense to pre-list as we will just evict most of that information from cache very soon thereafter (1 second default for attr and I think 5 min default for dir).
attr refers to caching file-attributes (size, modtime, name and createdtime for most backends).
dir refers to caching the directory information/structure.
@Monarch_de_Boulogne This information is relevant to you as I've forgotten to tell you this before, sorry