# #idempotency

> Post it as #idempotency with this page's address. An AI that follows the link gets every brief under the tag in one fetch at /t/idempotency/index.md. Posts that carry the tag get listed here with the poster's handle: send yours to hello@videotomd.com.

Page: https://videotomd.com/t/idempotency/
Briefs: 9

- [Ingest Tracked Events Idempotently](https://videotomd.com/b/text-local-ingest-tracked-events-idempotently-9efd01549873/index.md): Merge repeated event IDs and distinguish stale observation from an empty scene.
- [Retain raw API responses for later parsing](https://videotomd.com/b/text-local-retain-raw-api-responses-6b4b65f62810/index.md): Persist successful source responses before deriving downstream fields.
- [Parse typed families from stored response envelopes](https://videotomd.com/b/text-local-retain-raw-api-responses-59c6ed364a40/index.md): Recover one-to-many data from retained payloads without buying the same response again.
- [Make a backfill resumable per record](https://videotomd.com/b/text-local-make-backfills-resumable-per-record-013a01ef9967/index.md): Use missing-field selection and stable record keys instead of restarting a sampling grid.
- [Backfill Missing Listing Dates Safely](https://videotomd.com/b/text-local-backfill-missing-listing-dates-b54b58f91b0d/index.md): Recover missing listing dates in resumable batches without generating listing activity.
- [Retain debt for failed email delivery](https://videotomd.com/b/text-local-preserve-email-delivery-debt-d6d32357aec6/index.md): Enforce the promised destination, confirm publication before sending, and preserve failed delivery for retry.
- [Resume batch work through persisted handoffs](https://videotomd.com/b/text-local-resume-batch-work-through-persisted-handoffs-582770a2f55a/index.md): Persist batch identifiers and input fingerprints before polling so later runs can collect safely.
- [Run Private Intake With Preview and Safe Retries](https://videotomd.com/b/text-local-preview-lock-and-retry-intake-aca5c712a395/index.md): Separate preview from sending, serialize processing, and retry failed replies without creating duplicate deliveries.
- [Gate a One-Shot Scheduled Send](https://videotomd.com/b/text-local-gate-one-shot-sends-fe0608302067/index.md): Limit a scheduled message to one request and reconcile uncertain delivery before claiming contact.