Schema Registry and Evolution¶
Evolve event contracts without breaking mixed-version producers, consumers, or historical replay.
flowchart LR J[Junior: why schemas] --> M[Middle: compatibility] --> S[Senior: evolution failures] --> P[Professional: governance at scale]flowchart LR Producer --> Registry --> ID[Schema ID plus payload] --> Consumer --> Registry| Level | Guide | You are done when | |---|---|---| | Junior | Definition and why | You can explain contract drift. | | Middle | How it works | You can choose compatibility mode. | | Senior | Failures and mistakes | You can plan safe rolling evolution. | | Professional | Best practices and scale | You can govern contracts and replay. | Practice rule: Test a new schema against all retained history, not only the latest version.