title: simple voting system with MongoDB
body: <p>quick question I have a list of articals in mongodb and I want users to be able to upvote or down vote the artical.</p>
  
  <p>My first way would be in the artical collection to have two rows called upvote and downvote they would have numbers like
  upvote:360
  downvote:102;</p>
  
  <p>then I would need to order this by doing a sum
  upvote-downvote this would show the total likes of the artical.</p>
  
  <p>My question is in the mongoDB is this the best way to do it or am I better off with one "vote" and then just order it by that vote.</p>
  
  <p>Thank You</p>