advancedKafka Reliability & Throughput160 of 469
Given three microservices A -> B -> C, if C fails, how can you prevent failure propagation using Kafka (DLQ, asynchronous decoupling, backpressure)?
Tests whether you'd replace B's synchronous call to C with a Kafka topic so B can keep accepting work while C is down, route C's unprocessable messages to a dead-letter topic, and apply backpressure (pause/resume consumption) rather than letting B's queue grow unbounded.
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