Idempotenz (EN)

Idempotency in Data Pipelines

flowchart LR     A[Data Source] --> B[ETL Pipeline]     B --> C[Transformation Process]     C --> D[Target Database]          subgraph Idempotency     direction LR     E[First Execution] --> F[Data Processing]     F --> G[Result X]     H[Multiple Execution] --> F     F --> G     end          D -->|Idempotent| I[Consistent Dataset]     D -->|Non-idempotent| J[Duplicates/Inconsistencies] 

In Context

• Typically used together with transaction processing, retry mechanisms, and data quality assurance
• Related to: Atomicity, Consistency, Isolation, Durability (ACID), Idempotent Keys
• Example use case: Payment processing, where multiple attempts of the same transaction must not lead to double bookings