mongo modified_count

modified_count is a property in MongoDB that represents the number of documents that were modified by a write operation. When executing an update or replace operation, MongoDB returns an object that contains information about the write operation, including the modified_count property. This property is useful for verifying that a write operation had the desired effect on the database.

For example, if you execute an update operation to change the status field of all documents with a certain value in the category field, you can check the modified_count property to see how many documents were actually updated. If the modified_count is less than expected, you may need to revise your query or check for errors in your data.

In summary, modified_count is a useful property for tracking the impact of write operations on a MongoDB database