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MongoDB Sessions & Transactions

MongoDB supports transactions using sessions (requires a replica set).

Starting a Session​

const session = mongoDataSource.startSession();

Using a Session in Operations​

try {
  await User.insert({ name: 'Test' }, { session });
  await session.commitTransaction();
} catch (error) {
  await session.abortTransaction();
}

Best Practices​

  • Always commit or abort the session.
  • Use sessions for multi-document atomicity.
  • Sessions require a replica set.

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