How does MongoDB handle transactions and what are the transaction capabilities?

MongoDB provides multi-document transactions starting with version 4.0. This allows you

to execute multiple operations in a transaction, ensuring ACID properties (Atomicity,

Consistency, Isolation, Durability) across multiple documents and collections.

Example:

const session = client.startSession();

try {

session.startTransaction();

db.collection1.updateOne({ _id: 1 }, { $set: { status: "completed"

} }, { session });

db.collection2.updateOne({ _id: 2 }, { $set: { status: "shipped" }

}, { session });

session.commitTransaction();

} catch (error) {

session.abortTransaction();

} finally {

session.endSession();