修復就是一個 pull request。 Polylane 寫，你合併。
加入候補名單 github.com/coreplane/payments-api/pull/491
Cap retries on the checkout webhook worker #491
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main from polylane/autofix/chat/k3x9f2-4e7d21a Conversation 1 Commits 1 Checks 1 Files changed 2
polylane bot commented 6 minutes ago ···
Retries on the checkout webhook worker were unbounded: a failing delivery re-queued itself forever and amplified load on payments-api. This caps delivery at 5 attempts with exponential backoff and dead-letters the payload after the last one.
What changed
worker/deliver.ts gains MAX_DELIVERY_ATTEMPTS = 5 and backoff between attempts; exhausted payloads land in checkout-webhooks-dlq instead of re-queueing.
Validation
npm test — 214 passed. A forced failing delivery stopped after 5 attempts and appeared in the dead-letter queue.
Root cause · Why it's safe · Out of scope
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Merging is blocked
一個你不必自己寫的修復。 以及信任它的理由。
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寫得像隊友
在沙箱裡、在分支上，遵循你的提交慣例和儲存庫的指示。
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開出之前先檢查
一次安全審查會找出正確的差異仍可能弄壞部署的方式：鎖表的遷移、版本混用造成的中斷。
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停在你的審查
合併由你的審查與你的 CI 決定，就是這樣。
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它從一個「不」學習
把 pull request 關閉而不合併，Polylane 會弄清楚原因，並且不再重蹈覆轍。