{"id":"event-sourcing-and-cdc-converge-on-projection-pattern","text":"Both `Projection.catch_up` and `DerivedSystem.process_event` track a position cursor, pull/receive ordered events, and apply type-dispatched handlers — the same structural pattern solving \"derived data\" from different starting points","truth_value":"IN","source":"entries/2026/05/29/topic-ddia-unbundling-concept.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"event-sourcing-and-cdc-converge-on-projection-pattern","truth_value":"IN","reason":"premise"}]}}