https://devops-monk.com/tags/request-reply/Recent content in Request-Reply on Devops MonkHugoen-usMon, 04 May 2026 00:00:00 +0000https://devops-monk.com/tutorials/spring-kafka/request-reply/Mon, 04 May 2026 00:00:00 +0000https://devops-monk.com/tutorials/spring-kafka/request-reply/When Kafka Needs to Be Synchronous Kafka is designed for asynchronous event streaming. But some flows genuinely need a response: a payment validation service that must confirm before the order proceeds, or a pricing engine that must return the current price before checkout completes. ReplyingKafkaTemplate gives you a blocking send-and-receive call over Kafka without leaving the Kafka ecosystem. How Request-Reply Works sequenceDiagram participant Requester as "Order Service\n(ReplyingKafkaTemplate)" participant Broker participant Replier as "