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\"}]}" } ```