18 bootstrap-servers: ${spring.kafka.bootstrap-servers}
19 client-id: ${spring.kafka.client-id}
20 topic: ${spring.kafka.template.default-topic}
21 acks: ${spring.kafka.producer.acks}
22 throttle-ms: ${producer.throttle-ms}
23 batch-size: ${spring.kafka.producer.batch-size}
24 linger-ms: ${spring.kafka.producer.properties.linger.ms}
25 compression-type: ${spring.kafka.producer.compression-type}
28 bootstrap-servers: :9092