MongoDB sorting

Question

I want implement a \"bump\" feature for topics. Once a topic is bumped, it will have a new \"bump_date\" field. I want to sort it so that when there is a \"bump_date\" fie

Answer 1

As Brian Hicks suggested, creating an additional updated_at field is the way to go. This way, when a document is created you can have created_at and updated_at initially be the same.

{
     "created_at": xxx,
     "updated_at": xxx
}

If you then "bump" the updated_at field by setting it to the current time when there is a a bump event you can sort on the updated_at field to achieve the ordering you desire.