You are developing an e-commerce solution that uses a microservice architecture.
You need to design a communication backplane for communicating transactional messages between various parts of the solution.
Messages must be communicated in first-in-first-out (FIFO) order.
What should you use?
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A. B. C. D.A.
As a solution architect/developer, you should consider using Service Bus queues when: -> Your solution requires the queue to provide a guaranteed first-in-first-out (FIFO) ordered delivery.
https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-azure-and-service-bus-queues-compared-contrastedFor the given scenario of an e-commerce solution with a microservice architecture, where transactional messages need to be communicated in FIFO order, the recommended communication backplane option is Azure Service Bus (Option C).
Azure Service Bus is a messaging platform in Azure that provides asynchronous communication and decouples different parts of a distributed system, including microservices. It supports advanced messaging patterns like publish/subscribe, temporal decoupling, and guaranteed delivery.
Here are some reasons why Azure Service Bus is the most appropriate choice in this scenario:
FIFO order: Azure Service Bus supports ordered messaging that allows the messages to be sent and received in the order they were sent. This will ensure that the transactional messages are processed in the same order they were generated.
Transactional messaging: Azure Service Bus provides a transactional model for messaging that ensures that all operations involved in a transaction are either committed or rolled back. This will guarantee that the messaging operations related to a transaction are atomic and consistent.
Scalability and resilience: Azure Service Bus is highly scalable and resilient, enabling communication between large numbers of services, even across different regions. It supports features such as auto-scaling, partitioning, and geo-disaster recovery.
Integration with Azure: Azure Service Bus is integrated with other Azure services, such as Azure Functions, Logic Apps, and Event Grid, enabling easy integration with other parts of the solution.
In contrast, Azure Storage Queue (Option A) is a simple queueing mechanism for storing messages, but it does not support ordered messaging or transactional messaging. Azure Event Hub (Option B) is a scalable event processing service for streaming large amounts of data, but it is not designed for transactional messaging. Azure Event Grid (Option D) is an event routing service that enables reactive programming and event-driven architectures, but it does not support ordered messaging or transactional messaging.
In conclusion, Azure Service Bus is the most appropriate choice for designing a communication backplane for communicating transactional messages in FIFO order between various parts of the e-commerce solution based on a microservice architecture.