how to stream data from mongodb

Question

The mongo find(), return all the documents in a collection. I want to store every document that I have in my MongoDB into another database. So, I want to keep polling MongoDB for a single new document, because find().limit(1) would keep returning me the same again and again. I just want mongo to return, all the documents one by one. Is it possible? How can this be done?

Edit: I want to just copy every entry in my MongoDB instance to another DB, not just the latest ones.

Answer 1

This can be done using two different methods below:

• You can do it with the help of sort and by default, you find it  as natural sort:

find().sort({_id:-1}).limit(1) 

• And the better way is to use the tailable cursor.

To learn more about it, check out the MongoDB tutorial by Intellipaat with 24X7 support.