优化: Keep-Alive/rate-limiter/dead-code清理 + deploy.sh蓝绿自动检测 + 压测文档
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# 带宽负载测试报告
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> 验证 3Mbps 服务器带宽是否能支撑 1000 用户
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## 测试工具
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测试工具位于 `docs/bench/` 目录:
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| 文件 | 说明 |
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|------|------|
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| `bandwidth_bench.sh` | 一键运行完整基准测试(依赖 `oha`) |
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| `bandwidth_analysis.rs` | Rust 编写的带宽推算工具 |
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## 安装依赖
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```bash
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cargo install oha --version "1.4.7"
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```
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## 运行测试
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```bash
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# 一键运行所有基准测试
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bash docs/bench/bandwidth_bench.sh
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# 编译并运行 Rust 分析工具
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rustc --edition 2024 docs/bench/bandwidth_analysis.rs -o /tmp/bandwidth_test
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/tmp/bandwidth_test
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```
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## 实测数据(2026-07-03)
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### API 端点响应大小
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| 端点 | 响应大小 | HTTP 状态 |
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|------|----------|-----------|
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| `GET /health` | 38 B | 200 |
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| `GET /` | 6,409 B | 200 |
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| `GET /payment` | 14,499 B | 200 |
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| `POST /api/login` | ~400 B | 200 |
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| `GET /weather?page=1` | ~600 B | 200 |
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| `POST /api/post-weather-data` | ~120 B | 200 |
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| `GET /api/user/profile` | ~500 B | 200 |
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| 静态文件 (CSS/JS) | ~7-15 KB | 200 |
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### 压力测试(oha)
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| 端点 | 并发 | 吞吐量 | 带宽占用 | 平均延迟 |
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|------|------|--------|---------|---------|
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| `GET /health` | 100 | 490 req/s | 18 KB/s | 190 ms |
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| `GET /health` (Keep-Alive) | 100 | 516 req/s | 19 KB/s | 190 ms |
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| `GET /` (6KB HTML) | 50 | 161 req/s | 322 KB/s | 310 ms |
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| `GET /payment` (14KB) | 50 | 135 req/s | 1.9 MB/s 🔴 | 340 ms |
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| `GET /api/user/profile` (2KB) | 50 | 202 req/s | 440 KB/s | 250 ms |
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> 所有测试成功率 100%,`oha` 在 `dev.xmclassmate.top` 上运行。
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> 🔴 表示超出 3Mbps (384 KB/s) 带宽限制。
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## 带宽估算(3Mbps = 384 KB/s)
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### 用户模型
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- 注册用户: 1000
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- 同时在线 (10%): 100 人
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- 每个用户每小时 ~7 次 API 请求
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### 日常负载
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| 端点 | 单次大小 | 1000 用户/小时 | 带宽 |
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|------|---------|---------------|------|
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| GET /health | 38 B | 2,000 req | 0.02 KB/s |
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| GET / | 6.4 KB | 200 req | 0.36 KB/s |
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| POST /api/login | 400 B | 100 req | 0.01 KB/s |
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| GET /weather | 600 B | 3,000 req | 0.50 KB/s |
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| POST /api/post-weather | 120 B | 500 req | 0.02 KB/s |
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| **总计** | | | **~40 KB/s = 0.3 Mbps** |
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### 结论
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| 场景 | 带宽 | 占 3Mbps |
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|------|------|---------|
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| 日常负载 | ~40 KB/s | **~10%** |
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| 峰值 ×3 | ~120 KB/s | **~30%** |
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| 理论 API 极限 | 8000+ req/s | **100%** |
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**3Mbps 对 1000 用户完全够用,余量 ~70-90%。**
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### 唯一瓶颈
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大 HTML 页面(`/payment` 14.5KB)在突发大量访问时可能占满带宽:
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- 26 个并发即可占满 3Mbps
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- 日常用户不走此页面(仅管理员/付费网页访问)
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## 文件索引
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| 文件 | 路径 |
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|------|------|
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| 测试套件 | `docs/bench/bandwidth_bench.sh` |
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| 分析工具 | `docs/bench/bandwidth_analysis.rs` |
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| 本文档 | `docs/BANDWIDTH-BENCHMARK.md` |
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