Idempotent Ingestion for Financial Data Pipelines: Handling Retries Without Duplicate Records
A data pipeline can fail after writing a record but before acknowledging the message that carried it. The producer retries. The same event arrives again. If the consumer inserts a new row every time, a transient failure becomes duplicate data. This problem is especially important in financial-data systems, where repeated ingestion can distort totals, create confusing audit trails, or trigger…
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