Question

In a saga-based distributed transaction, what is the name of the operation executed to undo the effects of a previously committed local transaction if a subsequent step fails?

Accepted Answer

In a saga-based distributed transaction, the operation executed to undo the effects of a previously committed local transaction is called a compensating transaction. A saga is a sequence of local transactions where each local transaction updates the database and triggers the next step. Because distributed systems often lack the ability to perform atomic rollbacks across multiple independent services, they use compensating transactions to maintain data consistency. A compensating transaction acts as a corrective action that semantically reverses the changes made by a successful step, such as marking an order as cancelled after a payment fails. It does not literally revert the database state to a previous point in time, but rather performs a new business action that logically offsets the impact of the original, already-committed operation.

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In a saga-based distributed transaction, what is the name of the operation executed to undo the effects of a previously committed local transaction if a subsequent step fails?

In a saga-based distributed transaction, the operation executed to undo the effects of a previously committed local transaction is called a compensating transaction. A saga is a sequence of local transactions where each local transaction updates the data....