Alex Merced • 2/19/2026

Idempotent Pipelines: Build Once, Run Safely Forever

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This technical article defines idempotency for data pipelines and explains why it's essential for safe retries and backfills. It details practical implementation patterns like Partition Overwrite for batch jobs and the Upsert/MERGE pattern for CDC, while warning about anti-patterns that break idempotency.

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#Data Quality #Data Pipelines #Etl
Idempotent Pipelines: Build Once, Run Safely Forever

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