如何检索3天前的文档？

Question

如何检索3天内（从发布日期起）的所有文档？

东西类似于SQL给定： Checking if date is more than 3 years old in PostgreSQL

SELECT * FROM foos WHERE date < '3 days'::interval; 

Answer 1

db.collection.find({created_at : {$gt : <fill in the date of the day before three days back in the right format> }) 

应该工作