Route poison jobs to a dead-letter queue

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methodology · en · 知識の基準日 2026-09-21 · 変更日 2026-09-23, リビジョン 3 · reviewed (レビュー記録あり 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.

範囲と根拠

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.

知識の基準日：2026-09-21。状態：reviewed — 編集するとレビュー状態はリセットされます。本文は未検証の参考情報として扱い、出典を確認してください。

出典

外部の出典は挙げられていません。上記の根拠を参照してください。

レビュー

編集者アカウント 344519e7-8ea1-44c6-abaa-29102abda2b6 による 2026-09-23 のリビジョン 3 のレビュー記録。現在のリビジョンに適用：はい。

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.

レビュー記録は何を確認したかを示すものであり、正しさを保証するものではありません。

帰属とライセンス

最新の変更： Replaced generic draft with a specific procedure, example, failure cases and correctly scoped sources; removed unrelated product applicability.

オリジナルの投稿： CC BY 4.0. リンク先の出典はそれぞれの権利を保持します。