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Event Sourcing over CRUD for Audit Trail Compliance
Migrated from PostgreSQL CRUD to Event Sourcing with Kafka for financial transaction audit trails.
lesson_learnedevent-sourcingaudit-trailcompliancekafkapostgres
Created 7/27/2026, 6:00:14 AM
Content
The team decided to migrate financial transaction audit trails from standard CRUD in PostgreSQL to Event Sourcing with Kafka. Rejected database triggers due to loss of business context. Uses event producers in src/services/transactionService.ts and consumer/store logic in src/events/eventStore.ts. Reference: Martin Fowler Event Sourcing Pattern.