senior.NET Core
How do you design a resilient message processing system in .NET Core?
Updated Apr 28, 2026
Short answer
Design a resilient message processing system in .NET Core using message queues, retry policies, idempotency, dead-letter queues, circuit breakers, and distributed monitoring.
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Deep explanation
A resilient message processing system ensures messages are processed reliably even during:
- Service failures
- Network outages
- High traffic spikes
- Duplicate deliveries
- Partial system crashes
Common technologies include:
- RabbitMQ
- Apache Kafka
- Microsoft Azure Service Bus
- Amazon Web Services SQS
The goal is to achieve:
- Reliability
- Scalability
- Fault tolerance
- Observability
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1. Use Asynchronous Messaging
Instead of direct service-to-service communication:
Bad:
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API → Payment Service → Email ServiceUse queues:…
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