What are some challenges of cancelling a Saga that has already completed some steps? How does the Saga pattern support different ways of handling retries of failed compensating transactions?
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what is saga in microservices Informational
- How do you manage cache invalidation in a distributed environment? How does the Saga pattern handle the need for supporting different patterns for handling out-of-order message delivery in asynchronous communication between microservices in a Saga?
- How do you ensure that compensating transactions are correctly associated with the original transactions they are meant to undo?
- How can these logs be used for troubleshooting Sagas? How does the Saga pattern handle the need for supporting different levels of service discovery and registration for microservices participating in a Saga?
- 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 happens if a compensating transaction fails repeatedly?
- How can you track key metrics related to Saga execution and success rates?
- Can you name some popular open-source libraries for Saga implementation in Java?
- How do you measure the performance of a Saga? How does the Saga pattern affect the complexity of your microservices architecture?
- How can you detect and resolve cyclic dependencies if they occur? How does the Saga pattern handle the case where a microservice participating in a Saga becomes permanently unavailable?
- Can a Saga be used to implement a single business capability that spans multiple microservices?
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