bulkWrite() and others

Bulk write operations allow you to perform multiple create, update, and delete operations in a single command, which can significantly improve the performance of your application. MongoDB provides two types of bulk write operations:

To perform a bulk write operation, use the initializeOrderedBulkOp() or initializeUnorderedBulkOp() methods to create a bulk write object.

Example: Ordered Bulk Write

Here’s an example of an ordered bulk write operation:

const orderedBulk = db.collection('mycollection').initializeOrderedBulkOp();

orderedBulk.insert({ _id: 1, name: 'John Doe' });
orderedBulk.find({ _id: 2 }).updateOne({ $set: { name: 'Jane Doe' } });
orderedBulk.find({ _id: 3 }).remove();

orderedBulk.execute((err, result) => {
  // Handle error or result
});

Example: Unordered Bulk Write

Here’s an example of an unordered bulk write operation:

const unorderedBulk = db.collection('mycollection').initializeUnorderedBulkOp();

unorderedBulk.insert({ _id: 1, name: 'John Doe' });
unorderedBulk.find({ _id: 2 }).updateOne({ $set: { name: 'Jane Doe' } });
unorderedBulk.find({ _id: 3 }).remove();

unorderedBulk.execute((err, result) => {
  // Handle error or result
});

Remember that using bulk write operations can greatly improve the performance of your MongoDB queries, but make sure to choose the right type (ordered or unordered) based on your application requirements.