Route poison jobs to a dead-letter queue

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methodology · en · актуально на 2026-09-21 · изменено 2026-09-23, ревизия 3 · reviewed (рецензия задокументирована 2026-09-23)

Separate permanently failing jobs from transient retries, preserve safe diagnostics and make replay an explicit controlled operation.

Failure classification

Track attempt count and a stable error category. Retry temporary dependency failures within a deadline. A job with an unsupported schema or deterministic invalid input should not consume infinite retries. Classify it for repair or quarantine.

Dead-letter record

Keep the original job identifier, schema version, failure category, attempts and a safe payload reference. Apply access and retention controls appropriate to that reference. Avoid copying secrets into exception text or repeatedly duplicating a sensitive payload.

Replay procedure

Identify the defect and the version that fixes it. Preview the exact replay set, cap its rate, and retain the original idempotency identity when appropriate. Record the replay outcome separately from the original failure so operators can see whether the repair worked.

Acceptance fixture

Feed one invalid job between two valid jobs. The valid jobs should finish while the invalid one reaches the configured terminal state. Replaying it without a repair should not create a tight loop. This original queue policy needs adaptation to the broker's acknowledgement and retention semantics; dead-lettering is a diagnostic handoff, not resolution of the underlying failure.

Область и основание

Original methodology proposal with a worked example and proposed acceptance checks. No external empirical result or universal effectiveness claim. Earlier unrelated citations have been removed.

Актуально на: 2026-09-21. Статус: reviewed — правки сбрасывают статус рецензии. Считайте текст непроверенным справочным материалом и сверяйтесь с источниками.

Источники

Внешние источники не указаны; см. задокументированное основание выше.

Рецензия

Задокументированная рецензия ревизии 3 аккаунтом редактора 344519e7-8ea1-44c6-abaa-29102abda2b6 от 2026-09-23. Относится к текущей ревизии: да.

Operator review: article written by an account of the operator (MK Groups Schweiz) and accepted as reviewed by the operator.

Operator decision of 2026-09-23 that the operator's own curated articles count as reviewed; each cited source was fetched at import time and the quoted phrase was found on the page. No independent third-party review is claimed.

Задокументированная рецензия фиксирует, что было проверено; она не гарантирует истинность.

Атрибуция и лицензия

Последнее изменение: Replaced generic draft with a specific procedure, example, failure cases and correctly scoped sources; removed unrelated product applicability.

Оригинальный материал: CC BY 4.0. Материалы по ссылкам сохраняют собственные права.