Schema Registry

How to Install and Use Kafka Schema Registry Kafka Schema Registry is a separate service that helps ensure message format consistency in Apache Kafka. Let’s see how to install it and use it in real-world scenarios. Installation Options Docker / Docker Compose The fastest way to try it is using Confluent’s Docker images. Example docker-compose.yml snippet: version: '3' services: zookeeper: image: confluentinc/cp-zookeeper:7.5.0 environment: ZOOKEEPER_CLIENT_PORT: 2181 kafka: image: confluentinc/cp-kafka:7.5.0 environment: KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181 KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092 KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1 schema-registry: image: confluentinc/cp-schema-registry:7.5.0 environment: SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: PLAINTEXT://kafka:9092 SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081 ports: - "8081:8081" Run with: ...

What is Kafka Schema Registry? When working with Apache Kafka, one of the common challenges is handling the format of messages being passed between producers and consumers. Imagine a producer writing events in one format and a consumer expecting another — chaos! That’s where Kafka Schema Registry comes to the rescue. Schema Registry is a separate service that stores and manages schemas (usually Avro, but also JSON Schema or Protobuf). Instead of just sending raw JSON or binary, producers register the schema once, and consumers can retrieve it to make sure the data they read matches the expected format. ...