In microservices testing it is desirable to test against production/live data but not commit any updates. We should offer a simple solution that can defined by extension metadata and enabled/disabled by a feature flag. We may need to make simplifying assumptions about the scope (per session, per application, etc.) and durability of the updates.

Under the covers this will be achieved by using views, update triggers, and a store for the updates and when not enabled the expectation is that all operations should pass through. However the application will be limited to using Teiid SQL and will be required to use the Teiid or pg driver, or Teiid spring boot.