2026-05-26 09:17:55 +00:00
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# Plan — Round 1 Performance Evaluation (2026-05-26)
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2026-04-15 05:53:39 +00:00
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2026-05-26 09:17:55 +00:00
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> Agent: council/PerformanceBenchmarker
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2026-04-20 01:45:33 +00:00
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2026-05-26 09:17:55 +00:00
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## Phase: Draft → Review → Finalize
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2026-04-20 01:45:33 +00:00
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2026-04-20 01:46:20 +00:00
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---
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2026-04-20 01:45:33 +00:00
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2026-05-26 09:17:55 +00:00
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## 评估任务清单
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2026-04-20 01:45:33 +00:00
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2026-05-26 09:17:55 +00:00
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- [x] **Task 1**: [Done: PerformanceBenchmarker] 检查 git log 和文件结构
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- [x] **Task 2**: [Done: PerformanceBenchmarker] 探索 SeatMapService + seatmap API + SKIP LOCKED 实现
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- [x] **Task 3**: [Done: PerformanceBenchmarker] 输出性能评估报告 → `docs/council-eval-performancebenchmark.md`
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- [ ] **Task 4**: [Pending] 等待其他成员完成后,汇总至最终报告(西莉雅负责)
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2026-04-15 06:00:20 +00:00
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2026-04-16 00:11:57 +00:00
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---
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2026-04-20 01:45:33 +00:00
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2026-05-26 09:17:55 +00:00
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## 阶段划分
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2026-04-20 01:45:33 +00:00
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| 阶段 | 内容 | 状态 |
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|------|------|------|
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| **Draft** | Task 1-3(独立评估 + 输出报告) | ✅ 完成 |
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| **Review** | 等待 BackendArchitect、FrontendDeveloper、SecurityEngineer 完成评估 | ⏳ 等待 |
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| **Finalize** | 西莉雅汇总所有成员报告,输出综合决策报告 | ⏳ 等待 |
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2026-04-20 01:59:21 +00:00
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---
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2026-04-20 01:45:33 +00:00
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2026-05-26 09:17:55 +00:00
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## 依赖关系
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2026-04-20 10:49:13 +00:00
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- 本轮评估无对其他成员的依赖,可独立完成
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- 最终综合报告由西莉雅(协调者)负责
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2026-04-20 01:57:43 +00:00
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2026-04-20 01:46:20 +00:00
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---
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2026-05-26 09:17:55 +00:00
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## 投票结果
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2026-04-20 01:46:20 +00:00
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2026-05-26 09:17:55 +00:00
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**议题:下一步主攻方向**
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- 投票:**C(双线并行)**
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- 备选:A(后端优先,补充 seatSpecMap + 性能 P0 同步修复)
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2026-04-20 01:46:20 +00:00
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2026-05-26 09:17:55 +00:00
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详见 `docs/council-eval-performancebenchmark.md`
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2026-04-15 06:00:20 +00:00
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2026-04-16 00:11:57 +00:00
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---
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2026-04-15 06:20:03 +00:00
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2026-05-26 09:17:55 +00:00
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## 关键发现摘要
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2026-04-20 01:46:20 +00:00
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2026-05-26 09:17:55 +00:00
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| # | 严重程度 | 问题 | 量化 |
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|---|----------|------|------|
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| P1 | 🔴 严重 | `GoodsSpecBase` 全量扫描无分页 | 响应体 1-5 MB,TTFB > 2s |
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| P2 | 🔴 严重 | 无 `FOR UPDATE SKIP LOCKED`,超卖竞态 | 超卖率 = f(并发 × 事务时长) |
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| P3 | 🟡 高 | 轮询无差异化,缓存击穿 | 500 并发 DB QPS = 2500+ |
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| P4 | 🟡 高 | SoldSeats API stub | 支付后状态短暂不一致 |
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| P5 | 🟢 中 | 模板缓存 TTL=60s 与轮询周期耦合 | 感知延迟 0-60s |
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2026-04-19 21:25:48 +00:00
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2026-04-16 00:53:41 +00:00
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---
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2026-05-26 09:17:55 +00:00
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## 优先级建议
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2026-04-20 10:47:31 +00:00
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2026-05-26 09:17:55 +00:00
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1. **P0**:实现库存行锁(FOR UPDATE SKIP LOCKED)— 消除超卖
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2. **P0**:添加 `(goods_id, inventory)` 复合索引 — 消除全表扫描
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3. **P1**:实现细粒度库存轮询 API(差量更新)— 降低 80% DB 负载
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4. **P2**:Tree API 实现(Phase 4)
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