# src/main/resources/application.properties
spring.kafka.bootstrap-servers=localhost:9092
#spring.kafka.properties.security.protocol=SASL_PLAINTEXT
#spring.kafka.properties.sasl.mechanism=PLAIN
#spring.kafka.properties.sasl.jaas.config=org.apache.kafka.common.security.plain.PlainLoginModule required username="user1" password="******";
spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer
spring.kafka.producer.properties.spring.json.type.mapping=link:com.example.kafkaapp.link.Link