Schema version
A schema version is an identifiable revision of a data schema maintained as the schema evolves.
Kafka Streams in Action, Second Edition
A schema version is an ordered revision number identifying one version of a schema under a Schema Registry subject.
- How it is used
- Organizes schema revisions under Registry subjects for registration, retrieval, and topic-specific event evolution.
- How deep it goes
- Explains ordered revisions and REST retrieval, but defers schema compatibility rules and migration procedures.
- Examples
- Uses an Avro Avengers schema, curl endpoints, version 1, and a CustomerPurchaseEvent across interactions and purchases topics.
- What you can do after
- Operate/configure Schema Registry by listing, retrieving, and selecting subject-specific schema versions through REST endpoints.
Read how Kafka Streams in Action, Second Edition explains schema version →
Apache Kafka in Action
A schema version is a distinct revision of a data schema maintained as schemas change over time.
- How it is used
- Coordinates evolving Kafka message contracts between producers and consumers.
- How deep it goes
- Explains registry storage, compatibility checks, schema IDs, and operational risks without detailing a complete migration procedure.
- Examples
- Uses a Product Avro schema, optional origin and category fields, coexisting topic versions, and schema IDs.
- What you can do after
- Evaluate/understand how registries preserve schema traceability while exposing compatibility, availability, and migration risks.
Related concepts
- versioncontrasts with · A version is a distinct, identifiable state or revision of an artifact, system, or product.
- schema evolutionused by · Schema evolution is the controlled modification of a data schema over time while managing compatibility with existing data, producers, consumers, or stored records.
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