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Rethinking Java CRUDs With Event Sourcing and CQRS Patterns

calendar_today May 26, 2026 person Nicolas Duminil domain dzone

Traditional CRUD systems store only the current state of an entity. When a record is updated, the previous value is overwritten and lost forever. Event Sourcing inverts this model: instead of persisting state, the system persists the sequence of events that caused each state transition.

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