Note:
This setting must be manually added to the INI file.
This setting defaults to zero, which indicates that no filename caching is performed.
If set to a value other than zero, a group of filenames (the size of the group being the value of the setting) will be appropriated from the database prior to starting a batch scan. This means that a database query will not be performed after each page is scanned, but instead will be performed at intervals as needed while scanning.
This can allow the scan operation to run faster, but can also be wasteful if the group size is set much higher than the number of pages scanned in the average batch because once a group of filenames is allocated, it can only be used for the batch to which it was assigned.