REPLAYABILITY

Replayability. See Enterprise Integration Patterns.

Definition

Replayability — property of an EDI system where a historical payload can be replayed and produces the same functional result, without triggering unwanted side effects. Depends on idempotency.

Origin

Pattern documented in event sourcing (Greg Young, Vaughn Vernon). In EDI, it is the foundation of backfill and incident recovery.

Use

To replay an INVOIC over 30 days without duplicating invoices ERP-side, the system uses the idempotency key (Invoice Number + Date) and marks each replayed one 'replayed' in the audit trail.

Related

• IDEMPOTENCY — see entry.
• BACKFILL — see entry.
• CATCH UP CURSOR — see entry.