What are some strategies for dealing with external systems that do not support transactional behavior? How does the Saga pattern address the challenges of rollback in a distributed environment?
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what is saga in microservices Informational
- How do you expose Saga operations through APIs?
- What data points should be exposed for BI purposes? How does the Saga pattern handle the need for supporting different isolation levels for read operations that occur within the context of a running Saga?
- What are the trade-offs between consistency and availability when using the Saga pattern? How does the Saga pattern handle the need for notifications or alerts to be sent to users or other systems upon the completion or failure of a Saga?
- What are some common events that might be exchanged between microservices in a choreographic Saga? What are some common commands that an orchestrator might send to the participating microservices in an orchestrator-based Saga?
- How do microservices locate each other in a dynamic environment?
- How do you propagate security context across microservices in a Saga?
- What happens if the orchestrator crashes or restarts in the middle of a Saga execution?
- What are some security best practices for inter-service communication in a Saga? How does the Saga pattern handle the need for supporting different types of data formats and protocols for communication between microservices in a Saga (e.g., JSON, XML, gRPC)?
- What are the two main types or orchestration models of the Saga pattern? Describe the choreography-based Saga pattern.
- What are some strategies for performing zero-downtime data migrations?
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