Mongodb selecting random documents?

Question

MongoDB

How can you get random documents from a collection using filters?

i.e. how can you get random documents with such a request?
find({ "tag": "test" })

Answer 1

https://docs.mongodb.com/manual/reference/operator...
something like this

db.posts.aggregate([ 
  { $match: { "tag": "test" } },
  { $sample: { size: 3 } } 
])