When Microservices need Transactions: The SAGA Pattern. 💸
Microservices break the traditional ACID transaction. The Saga pattern is a sequence of local transactions, where each transaction updates the database and publishes an event that triggers the next step.
If any step fails, the Saga executes compensating transactions to undo the work.
This is complex, but essential for highly decoupled, business-critical workflows (e.g., e-commerce checkout).
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