Schema Registry

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Choose the policy you would defend in a design review. Choices save as you go.

1.What does backward compatibility mean in this exercise?

Old readers can read every new payloadThe new reader can read data from the selected older writer schemasAll fields must have identical names forever

2.How should a new required field without a default affect old data?

Always accept itIgnore the field definitionReject backward compatibility under this record-language policy

3.How should event payloads identify their contract?

Carry an immutable registered schema IDOnly a mutable subject nameGuess from the first field

Trade-offs, failure cases and tests

Explain a rejected alternative, a failure mode and how you would test the design. At least 80 characters for the completeness check.

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