How to store an ordered set of documents in MongoDB without using a capped collection

Question

What\'s a good way to store a set of documents in MongoDB where order is important? I need to easily insert documents at an arbitrary position and possibly reorder them lat

Answer 1

For abitrary sorting of any collection, you'll need a field to sort it on. I call mine "sequence".

schema:
{
 _id: ObjectID,
 sequence: Number,
 ...
}

db.items.ensureIndex({sequence:1});

db.items.find().sort({sequence:1})