Learn more about MongoDB BulkWrite Upsert and how it works from our experts. Our MongoDB Support team is here to help you with your questions and concerns.

MongoDB BulkWrite Upsert | An Introduction

The BulkWrite operation in MongoDB, allows us to perform multiple write operations in a single request. This goes a long way in improving performance and efficiency when dealing with large datasets. In other words, upsert lets us update existing documents or insert new documents based on certain criteria.

Let’s take a quick peek at how upsert works within MongoDB’s BulkWrite operation:

1. First, we have to create an instance of the BulkWrite class in our MongoDB driver code.
2. Then, we have to define the update operations we want to perform. Each update operation specifies the criteria to match documents and the modifications to be made.
3. Furthermore, we have to specify the “upsert” option to indicate if we want MongoDB to insert a new document in case no matching documents are found. If this is set to true, an upsert operation will be performed.
4. Additionally, the upsert operation relies on the matching criteria specified in the update operation. If a document matches the criteria, it is updated as per the modification specified. If no document matches the criteria, and upsert is enabled, a new document will be inserted based on the provided update operation.
5. Once we define all the update operations, we can execute the BulkWrite operation to perform the specified updates and upserts. As a result, the BulkWrite operation sends a single request to MongoDB, reducing the network overhead.

At the end of the day, the BulkWrite operation with the upsert feature, helps us perform multiple updates and inserts in a single request.

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Conclusion

To conclude, our Support Techs introduced us to MongoDB BulkWrite Upsert option.