Transactions In MongoDB

Question

I am using a NoSQL database MongoDB with Java and Spring Data. I am aware that MongoDB only supports transactions for a single document.

I am using Spring Transactions to carry out MongoDB transcations. I am using TransactionTemplate. What should I set in TransactionManager when using TransactionTemplate?

EDIT

I have something like this:

<bean id=”txtTemplateBean” class=”org.springframework.transaction.support.TransactionTemplate”>
<property name=”transactionManager” ref=”txnManagerBean”></property>

I need to define txnManagerBean to point to something like DataSourceTransactionManager for a MongoDB database.

Answer 1

Multi-document ACID transactions are now supported in MongoDB 4.0! See https://www.mongodb.com/blog/post/mongodb-multi-document-acid-transactions-general-availability

Answer 2

MongoDB does support transaction-like semantics using two-phase commits.

There is also another independent effort to support transactions in mongodb using optimistic locking.

Answer 3

MongoDB doesn't support transactions, it only supports atomic operations.

http://docs.mongodb.org/manual/tutorial/model-data-for-atomic-operations/

Here is a post from someone who implemented transactions for MongoDB with optimistic locking: https://stackoverflow.com/a/12757751/1173560