How to retrieve last update time of each document in MongoDB?

Question

I would like to know if there is a way to get the last update/modify time of data (i.e documents) in a collection in MongoDB. More clearly, I want to make a query to retrieve al

Answer 1

No, MongoDB by itself does not store either creation or update timestamps. You have to do that yourself (and as you have found out, if you use an ObjectID _id then you get the creation date already).