dotnet-messaging-patterns

The saga pattern in .NET coordinates complex, multi-step business processes using state machines with MassTransit. It manages state machine orchestration for critical workflows, enabling robust asynchronous communication and compensation logic for failed operations.

Message idempotency in event-driven .NET systems ensures safe message processing with at-least-once delivery guarantees. It prevents duplicate processing side-effects when the same message is delivered multiple times, maintaining data consistency across asynchronous microservices.

Yes, MassTransit supports publish/subscribe with both Azure Service Bus Topics and RabbitMQ Fanout Exchanges. You can implement durable messaging patterns across either broker, enabling resilient, scalable event-driven architectures in .NET.

Dead-letter queues handle undeliverable messages in .NET event-driven systems to prevent data loss. By routing failed messages to a DLQ, you can monitor, inspect, and reprocess them, ensuring robust error handling and system resilience.

The competing consumers pattern scales message processing across multiple instances for high throughput in .NET event-driven architectures. Multiple consumers read from the same queue, distributing the workload and maximizing processing speed for durable messaging.

Delivery guarantees in .NET messaging include at-most-once, at-least-once, and exactly-once processing. Using Azure Service Bus or RabbitMQ with MassTransit, you configure these guarantees to balance performance against the risk of duplicate or lost messages.