Kafka Schema Registry 兼容性与模式演进实践

设置全局兼容性：PUT http://schema-registry:8081/config

{

"compatibility": "BACKWARD"

}

为主题设置兼容性：PUT http://schema-registry:8081/subjects/orders-value/config

{

"compatibility": "FULL"

}

注册 Avro 模式：POST http://schema-registry:8081/subjects/orders-value/versions

{

"schema": "{\"type\":\"record\",\"name\":\"Order\",\"fields\":[{\"name\":\"id\",\"type\":\"string\"},{\"name\":\"amount\",\"type\":\"double\"}]}"

}

验证兼容性：POST http://schema-registry:8081/compatibility/subjects/orders-value/versions/latest

{

"schema": "{\"type\":\"record\",\"name\":\"Order\",\"fields\":[{\"name\":\"id\",\"type\":\"string\"},{\"name\":\"amount\",\"type\":\"double\"},{\"name\":\"currency\",\"type\":\"string\",\"default\":\"USD\"}]}"

}