I want to design a question structure with some comments, but I don’t know which relationship to use for comments: embed or reference? Explain me pros and cons of both solutions?
- embed is good if you have one-to-one or one-to-many relationships between entities, and
- reference is good if you have many-to-many relationships.
Also consider as a general rule, if you have a lot of child documents or if they are large, a separate collection might be best. Smaller and/or fewer documents tend to be a natural fit for embedding.