如何不使用sort检索mongodb-mongoose中最新添加的文档？

Question

I have a large mongodb collection where each document represents a simple log message that occurs at at set time interval (say 1 minute). Whenever I do a Find using Mongoose, I get the entire contents of the DB in the order which they were added. I am looking for a query where I can get the last 10 added records without doing a sort on a timestamp. Below is a sample of my of my documents:

[ { _id: 58bd2dcd51d1169260ccbdac,
  contentID: 1,
  clicks: 50,
  views: 61 },
 { _id: 58bd43d40fda0d25b0c6724e,
  'contentID: ': 1,
  clicks: 45,
  views: 72 },
{ _id: 58bd54ae2d67e820143eddda,
  'contentID: ': 1,
  clicks: 25,
  views: 32 }]

Answer 1

Unfortunately I believe you will have to use sort in your query.

example.find()sort.({"_id": -1}).limit(10)

to make it easier, create a variable and then call the variable

var q = db.example.find()sort.({"_id": -1}).limit(10);
q.exec(function() ...},{})