Document versioning in MongoDB can be implemented in multiple ways, each with its pros and cons. Here are a few options:
- Embed version in the Document: Store a version field in each document and increment it with each update.
- Store each version as a separate document: Store each version of the document as a separate document in the collection, with a unique version identifier.
- Use MongoDB’s built-in change streams: MongoDB 4.0 and later support change streams, which can be used to track changes to a collection in real-time.
- Use a separate collection for version history: Store the version history of a document in a separate collection, which can be linked to the original document using a reference.
Whichever method you choose, make sure to test it thoroughly and to consider the trade-off between the complexity of the solution and the requirements for versioning in your use case.