For deleting - yes, you will get a round-trip per delete request. So if they are serialized (which is the case with standard tools), it will be excruciatingly s

For deleting - yes, you will get a round-trip per delete request. So if they are serialized (which is the case with standard tools), it will be excruciatingly slow indeed. For scanning - you'll get the list of content in chunks. The size of a chunk depends on the size of the buffer you provide. For smaller folders it'll normally fit in a single request.