Saga Pattern
Explore the saga pattern. Learn to coordinate actions, handle errors, and maintain consistency.
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What is a saga pattern?
The saga pattern is a design pattern used to manage distributed transactions in a microservices architecture. It helps ensure that in a system with multiple services, a sequence of operations is either fully completed or, if any operation fails, compensatory actions are taken to revert the system to a consistent state.
Analogy
The saga pattern can be thought of as a theatrical play with multiple acts, where each act represents a service or operation in a complex transaction within a distributed system. AWS Step Functions or other orchestration tools serve as the director, coordinating the execution and managing the flow of the performance.
In a distributed system, each service is responsible for a specific part of the transaction. If an issue arises during one of the acts, the saga pattern provides compensating actions to maintain system consistency by reversing or undoing the operations already performed. This ensures the system can recover gracefully from ...