Retry Behavior - Spark360 Developers

The delivery worker processes queued rows and applies status-based retry logic without blocking core lead workflows.

Processing states

pending -> waiting for first attempt
failed -> retry scheduled
delivered -> terminal success
abandoned -> terminal failure after retry policy or immediate 4xx

Response handling

HTTP Response	Action
`2xx`	mark row `delivered`
`4xx`	mark row `abandoned` immediately
`5xx` or timeout	mark row `failed`, increment attempts, schedule retry

Retry schedule

Attempt	Delay after previous
1	Immediate
2	1 minute
3	10 minutes
4	1 hour
5	4 hours -> abandoned

Worker row selection and guarded updates must both accept pending and failed statuses so successful retries can transition failed rows to delivered.