56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
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# T872 — race retry and duplicate charge regression
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> Status: `done`（2026-08-11）
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> Milestone: `M7`
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> Est. change: `~190 lines`
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## Goal
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完成後多 worker、provider retry、HTTP retry、跨 watch／query、產品改名／改痛點都證明不重建、不重判、不重扣。
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## Depends on
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- T852、T853、T861、T871
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## Inputs
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- `apps/backend/internal/module/radar/repository/**product**_test.go`
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- `apps/backend/internal/module/radar/usecase/**_test.go`
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- Spec §5.3、驗收 #16–#22
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## Outputs
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### 程式變更（預期路徑）
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| 路徑 | 動作 | 說明 |
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|------|------|------|
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| `apps/backend/internal/module/radar/usecase/opportunity_inbox_race_test.go` | add | worker／job／provider race matrix |
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| `apps/backend/internal/module/radar/repository/opportunity_inbox_race_test.go` | add | tombstone／judgment uniqueness |
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| `apps/backend/internal/module/usage/**_test.go` | edit | usage idempotency assertion |
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### 行為變更
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- duplicate_judgment_or_charge_count 必須為 0；產品只改名稱不改 input version，實質改痛點才開新版本。
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### API / 契約（若有）
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- Redis lock value、guarded job status、usage source 與唯一鍵符合 spec。
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## Out of scope
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- 不提高並行數、不做壓力測試平台建置。
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## Acceptance
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- [x] race test 綠；重跑只處理未完成候選。
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- [x] 同候選 accepted／rejected 不多扣；invalid AI 不留有效 cache。
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- [ ] 指令：
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```bash
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cd apps/backend && go test ./internal/module/radar/... ./internal/module/usage/... -race -run 'Inbox|Duplicate|Meter|Sweep' -count=1
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```
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## Notes
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若與 brand-product-radar T774 重疊，保留一份測試並在另一 INDEX 交叉引用。
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