Avro Serialization with Schema Registry

spring:
  kafka:
    producer:
      value-serializer: io.confluent.kafka.serializers.KafkaAvroSerializer
      properties:
        schema.registry.url: http://schema-registry:8081
        auto.register.schemas: true     # the default: register the schema if it is new
        # use.latest.version only applies when auto.register.schemas is false

    consumer:
      value-deserializer: io.confluent.kafka.serializers.KafkaAvroDeserializer
      properties:
        schema.registry.url: http://schema-registry:8081
        specific.avro.reader: true   # default false (GenericRecord); true returns generated classes

{
  "type": "record",
  "name": "OrderEvent",
  "namespace": "com.example.events",
  "fields": [
    { "name": "orderId", "type": "string" },
    { "name": "customerId", "type": "string" },
    { "name": "status", "type": "string" },
    { "name": "amount", "type": "double" },
    { "name": "timestamp", "type": { "type": "long", "logicalType": "timestamp-millis" } },
    { "name": "metadata", "type": ["null", "string"], "default": null }
  ]
}