Schema Design: Embedding vs. Referencing

Learn when to embed sub-documents for 1-to-few data vs. when to reference across collections for 1-to-many relationships.

The Golden Rule of MongoDB Schema Design

Embed: When data is accessed together, has 1-to-few relationships, and does not grow unboundedly (e.g., shipping addresses on a user).

Reference: When data is accessed independently, grows without bound (e.g., millions of server log entries), or requires many-to-many mappings.

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What is the maximum allowed BSON document size for a single document in MongoDB?