It is Possible to Execute Transactions
Explore how to implement ACID transactions in DynamoDB to ensure atomicity and consistency across multiple records. Learn the use of transactGetItems and transactWriteItems commands, their limitations, and how DynamoDB handles concurrency and transaction failures for effective data operations.
There are occasions when it’s necessary to implement transactions and all that they entail, specifically those concepts that are closely related to ACID. DynamoDB allows us to execute transactions and, in this lesson, we’ll analyze in detail how they are implemented on this database.
Transactions in DynamoDB
As mentioned before, DynamoDB implements the concepts of Atomicity, Consistency, Isolation and Durability which constitute a transaction. A transaction is made up of one or more command executions within a single request. To clarify this concept, we can have a look at the following image.
It’s observed that there is an array of commands that we want to execute on a table. In this case, they will be executed with a single request:
DynamoDB implements a concept known as all-or-nothing, which means that, in the case of a group of changes that have to be executed as a transaction, DynamoDB will guarantee the correct execution of all of those changes. If any of them fail, the whole transaction will also and a rollback will be made. As a ...