What are the two flows in the reliability pattern?

• A. Acquisition flow and processing flow
• B. Ingestion flow and transformation flow
• C. Input flow and output flow
• D. DLQ flow and log flow

Answer: (D)

In the reliability pattern, two flows are dedicated to handling issues and ensuring traceability. The DLQ flow focuses on messages that fail processing, routing them to a Dead Letter Queue so they can be examined, corrected if possible, and reprocessed without disrupting the main processing path. The log flow separately captures processing events—such as successes, failures, retries, and timestamps—providing an auditable trail for monitoring and debugging. This separation keeps the main workflow clean and ensures that errors don’t cause data to be lost or buried, while also giving you clear visibility into what happened and when. Other options describe generic data movement, not the explicit error-handling and auditing roles that the reliability pattern relies on.