Nicholas Telford created KAFKA-20497:
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             Summary: ReadOnlyView implementations for wrapping stores
                 Key: KAFKA-20497
                 URL: https://issues.apache.org/jira/browse/KAFKA-20497
             Project: Kafka
          Issue Type: Sub-task
            Reporter: Nicholas Telford
            Assignee: Nicholas Telford


Each of the {{Caching*Store and}} {{Metered*Store}}  implementations need to 
provide a custom {{ReadOnlyView}} store implementation that implements their 
domain logic (caching/metering) on a read-only version of their {{wrapped()}} 
store (via: {{wrapped().readOnly(isolationLevel).}}

{{{}ChangeLogging*Store{}}}s can simply delegate to 
{{{}wrapped().readOnly(isolationLevel){}}}, because read-only stores do not log 
any changes.



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