Multi-collection, multi-document 'transactions' in MongoDB

Question

I realise that MongoDB, by it\'s very nature, doesn\'t and probably never will support these kinds of transactions. However, I have found that I do need to use them in a so

Answer 1

MongoDB 4.0 adds support for multi-document ACID transactions.

Java Example:

try (ClientSession clientSession = client.startSession()) {
   clientSession.startTransaction();
   collection.insertOne(clientSession, docOne);
   collection.insertOne(clientSession, docTwo);
   clientSession.commitTransaction();
}

Note, it works for replica set. You can still have a replica set with one node and run it on local machine.

• https://stackoverflow.com/a/51396785/4587961
• https://docs.mongodb.com/manual/tutorial/deploy-replica-set-for-testing/