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https://www.mongodb.com/transactions
MongoDB 4.0 adds support for multi-document ACID transactions, making it the only database to combine the speed, flexibility, and power of the document model with ACID guarantees. Through snapshot isolation, transactions provide a consistent view of data, and enforce all-or-nothing execution to maintain data integrity.
https://docs.mongodb.com/manual/core/write-operations-atomicity/
In version 4.2, MongoDB introduces distributed transactions, which adds support for multi-document transactions on sharded clusters and incorporates the existing support for multi-document transactions on replica sets. For details regarding transactions in MongoDB, see the Transactions …
https://docs.mongodb.com/manual/core/transactions-operations/
For cursors created in a transaction, you cannot call getMore outside the transaction. Starting in MongoDB 4.2, you cannot specify killCursors as the first operation in a transaction. Operations that affect the database catalog, such as creating or dropping a collection or an index, are not allowed in multi-document transactions.
https://techcrunch.com/2018/02/15/mongodb-gets-support-for-multi-document-acid-transactions/
Feb 15, 2018 · MongoDB is finally getting support for multi-document ACID (atomicity, consistency, isolation, durability) transactions. That’s something the MongoDB community has been asking for …
https://www.mongodb.com/blog/post/multi-document-transactions-in-mongodb
May 22, 2019 · The changes to MongoDB that enable multi-document transactions will not impact performance for workloads that do not require them. In MongoDB 4.0, which will be released this summer*, transactions will work across a single replica set, and MongoDB 4.2* will support transactions across a sharded deployment.
https://docs.mongodb.com/manual/core/transactions/
In version 4.0, MongoDB supports multi-document transactions on replica sets. In version 4.2, MongoDB introduces distributed transactions, which adds support for multi-document transactions on sharded clusters and incorporates the existing support for multi-document transactions on replica sets.
https://docs.mongodb.com/manual/faq/fundamentals/
Does MongoDB support transactions?¶ Because a single document can contain related data that would otherwise be modeled across separate parent-child tables in a relational schema, MongoDB’s atomic single-document operations already provide transaction semantics that meet the data integrity needs of the majority of applications.
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