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Spring for Apache Kafka

2 roadmaps31 questions

Spring for Apache Kafka: the producer template, listener containers, error handling and dead-letter topics, transactions and exactly-once, Kafka Streams, and topic provisioning. Kafka is the default event backbone in interviews, so this section carries weight.

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How do you wire a materialized KTable state store in Spring and expose it for interactive queries?

level: principalimportance: nice to knowfreq 22%

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Build a KTable with Materialized.as("store-name") so Kafka Streams keeps a named state store. Then reach the running client via StreamsBuilderFactoryBean.getKafkaStreams() (or KafkaStreamsInteractiveQueryService) and call store(...) to read current values by key.

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