2026-07-16 13:47:37 +08:00
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# Backend Service
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后端工程使用 FastAPI，定位为模型微调平台的应用平台服务，负责用户中心、多租户、权限隔离、项目、数据集、模型、训练任务、审批、审计和算力平台编排。
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## 目录结构
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```text
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backend/
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app/
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main.py # FastAPI 应用入口
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2026-07-21 10:09:36 +08:00
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api/v1/ # 对前端暴露的 接口路由
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2026-07-16 13:47:37 +08:00
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core/ # 配置、日志、中间件、权限等基础能力
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db/ # 数据库连接、迁移集成、事务工具
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modules/ # 业务模块
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auth/
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tenant/
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project/
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model/
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dataset/
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data_process/
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fine_tune/
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eval/
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inference/
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approval/
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audit/
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compute_gateway/
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file_gateway/
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engine_registry/
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retention/
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system/
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schemas/ # Pydantic 入参/出参模型
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services/ # 跨模块应用服务
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workers/ # 后台任务入口
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requirements.txt # 后端第三方依赖
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logs/ # 本地开发日志目录，生产环境建议挂载到独立日志盘
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```
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## 本地启动
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```bash
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cd backend
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python -m venv .venv
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.venv\Scripts\activate
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pip install -r requirements.txt
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uvicorn app.main:app --reload
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```
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健康检查：
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```text
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2026-07-21 10:09:36 +08:00
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GET /modelTF/health
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2026-07-16 13:47:37 +08:00
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```
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## 日志
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日志模块位于 `app/core/logging.py`，使用说明见 `../docs/backend-logging.md`。
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默认日志文件：
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```text
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logs/backend-YYYY-MM-DD.log
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logs/error-YYYY-MM-DD.log
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```
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文件日志为 JSON Lines 格式，单个文件不超过 20MB，只保存最近 10 天，错误日志按 `ERROR` 级别独立拆分，便于 ELK/日志平台采集。
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