When making changes to a model in the database, is it more efficient to only update a specific field or replace all objects at the same level with that field?
When making changes to a model in the database, is it more efficient to only update a specific field or replace all objects at the same level with that field?
According to the MongoDB documentation:
When using the update() method, you have the option to either modify specific fields in existing documents or completely replace an existing document.
To update specific fields, make sure that your
<update>document contains update operator modifiers like $set. This ensures that only the specified fields are updated while leaving the rest of the document untouched. If you need to update nested documents or arrays, provide the replacement value for the field or use dot notation to target specific fields within embedded documents or arrays.If your
<update>document only includes field:value expressions, the update() method will replace the entire matching document with the provided<update>document. It's important to note that the _id value will not be replaced during this process. The update() method is unable to update multiple documents simultaneously.
In my personal opinion, it's better to overwrite dependent objects as well when updating a document. This helps maintain proper versioning and ensures that all related objects are kept up to date. While simple updates may suffice when no id changes are involved, overwriting the entire object can be a more reliable approach for managing version history effectively.
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