Document automation · Implement
Batch PDF Generation: Architecture, Validation, and Retry Strategy
Design bulk document workflows with preflight validation, independent job state, bounded retries, and controlled result storage.
For developer · 9 min · Reviewed Jul 31, 2026
Define the batch boundary
A batch should represent a meaningful application operation such as a statement run or certificate cohort. Store the batch identifier with that operation.
Validate before creating jobs
Validate every item against one selected template contract. Failing before job creation avoids mixing predictable schema errors into an expensive render run.
Track items independently
Each document needs its own source identifier, render-job identifier, state, attempts, and final storage location. A partial failure should not force successful documents to render again.
Control retries and concurrency
Retry only transient failures with bounded backoff and respect account concurrency and rate limits. Reconcile state before resubmitting after an interrupted coordinator process.
Download and retain deliberately
Job results expire after 24 hours. Download completed files promptly, authorize access in your application, and apply the retention policy required by the document type.