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transactionsnosqlamazon-dynamodb
Kaidul
Kaidul

Reputation: 15875

How does Amazon Dynamodb transaction work under the hood?

Amazon DynamoDB has recently announced transaction. I am interested to know how this transaction works under the hood for a NoSQL storage like dynamodb - how does it differ from traditional relational database in terms of mechanism?

Upvotes: 4

Views: 345

Answers (1)

Alexander Petrov
Alexander Petrov

Reputation: 14231

First, traditional relational databases have two transaction mechanisms: locks and versions.

Quote from the blog:

DynamoDB performs two underlying reads or writes of every item in the transaction, one to prepare the transaction and one to commit the transaction.

As I understand it, this means that versions of the data are created. Therefore, the DynamoDB mechanism similar to RDBMS versioning.

Upvotes: 1

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