Updating Only Certain Documents

Option	Reason
-refreshtime	Since it is a large collection, you do not want to index documents that were indexed in the last 30 hours. Using `-refreshtime` allows you to specify a time threshold for documents to refresh. Another way to specify 30 hours is to simply use only hours: `-refreshtime 30 hours` Keep in mind that if you have recently performed a resync, documents may not have a last-indexed date as `-resync` removes that information from the collection's persistent store.



          -refreshtime 30 hours

Option	Reason
-start, -restart	When you use the `-refresh` option, you cannot use the `-start` or `-restart` options.