I need an advice about NoSQL/MongoDb and data/models structure

Question

Recently I\'m exploring NoSQL Databases. I need an advice about how to store data in the most optimal and efficient way for a given problem. I\'m targeting MongoDB, now. However

Answer 1

In CouchDB this is very simple. One view emits:

function(doc) {
 if(doc.type == "vote") {
   emit(doc.story_id, doc.user_id);
 }
}

Another view emits:

function(doc) {
 if(doc.type == "vote") {
   emit(doc.user_id, doc.story_id);
 }
}

Both are queries extremely fast since there is no join. If you do need user data or story data, CouchDB supports multi-document fetch. Also quite fast and is one way to do a "join".