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chore: establish development baseline
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# BlueArchive Toolkit 架构设计
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## 概述
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BlueArchive Toolkit 采用 **Monorepo + 多语言混合** 架构,旨在构建一个可持续维护十年以上的工业级开源项目。
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当前文档描述目标架构。实际实现状态以根目录 `CURRENT_STATUS.md` 和 `PROJECT_PLAN.md` 为准。
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已接受的架构决策:
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- `adr/0001-engine-and-application-boundaries.md`:Rust 引擎与 Go 应用层边界。
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- `adr/0002-cas-v1-design-boundary.md`:CAS V1 设计边界。
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---
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## 设计原则
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### 1. 模块化与解耦
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- **高内聚、低耦合**:每个模块职责明确,依赖关系清晰
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- **接口优先**:通过接口定义模块边界,支持多种实现
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- **插件化**:核心功能稳定,扩展功能通过插件实现
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### 2. 语言选型
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| 模块 | 语言 | 理由 |
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|------|------|------|
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| CLI、API Server、下载器 | Go | 并发模型优秀、部署简单、生态成熟 |
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| AssetBundle 解析、Patch 引擎、CAS 引擎 | Rust | 零成本抽象、内存安全、性能极致 |
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| Web 管理后台 | Vue 3 + TypeScript | 渐进式、类型安全、生态完善 |
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### 3. 数据流设计
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```
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用户请求 → CLI/API → Go 业务层 → Rust 核心层 → CAS 存储 → 数据库
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↓ ↓
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Web UI 缓存层 (Redis)
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```
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---
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## 核心模块
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### 1. CAS 存储引擎 (Rust)
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**职责**:内容寻址存储,实现去重、引用计数、垃圾回收
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**接口**:
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```rust
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pub trait Storage {
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fn put(&self, data: &[u8]) -> Result<Hash>;
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fn get(&self, hash: &Hash) -> Result<Vec<u8>>;
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fn exists(&self, hash: &Hash) -> bool;
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fn delete(&self, hash: &Hash) -> Result<()>;
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}
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pub trait RefCounter {
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fn incr(&self, hash: &Hash) -> Result<u64>;
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fn decr(&self, hash: &Hash) -> Result<u64>;
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fn get_count(&self, hash: &Hash) -> Result<u64>;
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}
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```
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**存储结构**:
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```
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cas/
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├── objects/
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│ ├── ab/
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│ │ └── cdef1234... (内容)
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│ └── cd/
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│ └── ef567890...
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├── refs.db (SQLite: 引用计数)
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└── metadata.db (元数据)
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```
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**特性**:
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- 基于 BLAKE3 的快速 Hash 计算
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- 使用 SQLite 管理引用计数和元数据
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- 支持并发读写(通过文件锁)
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- 自动垃圾回收(引用计数为 0 的对象)
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---
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### 2. 资源同步器 (Go)
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**职责**:从游戏服务器下载资源、增量更新、完整性校验
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**架构**:
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```
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Manifest Parser → Version Manager → Downloader → CAS Storage
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↓
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Task Queue (多线程)
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↓
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Progress Reporter
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```
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**特性**:
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- 多线程并发下载
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- 断点续传(Range 请求)
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- 自动重试机制(指数退避)
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- 限速支持
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- Hash 校验(下载后立即验证)
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---
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### 3. AssetBundle 解析器 (Rust)
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**职责**:解析 Unity AssetBundle,提取资源
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**插件化架构**:
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```rust
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pub trait AssetParser {
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fn name(&self) -> &str;
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fn supported_types(&self) -> Vec<AssetType>;
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fn parse(&self, bundle: &AssetBundle) -> Result<Vec<Asset>>;
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}
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// 插件注册
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pub struct ParserRegistry {
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parsers: HashMap<AssetType, Box<dyn AssetParser>>,
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}
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```
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**内置解析器**:
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- TextAsset Parser
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- Localization Parser
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- MonoBehaviour Parser
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- ScriptableObject Parser
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**扩展机制**:
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- 动态加载 `.so`/`.dll` 插件
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- 通过配置文件注册自定义解析器
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---
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### 4. 翻译系统 (Go)
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**架构**:
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```
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Text Extractor → Translation Memory (查询) → AI Provider → Glossary (术语替换) → Output
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↓ ↓
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PostgreSQL 审核队列
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```
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**Provider 抽象**:
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```go
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type TranslationProvider interface {
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Name() string
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Translate(ctx context.Context, req *TranslateRequest) (*TranslateResponse, error)
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SupportedLanguages() []Language
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}
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```
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**实现**:
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- DeepL Provider
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- OpenAI Provider
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- Anthropic Provider
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- Google Translate Provider
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- Azure Translator Provider
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**翻译记忆库**:
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- 精确匹配:100% 匹配直接使用
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- 模糊匹配:使用相似度算法(Levenshtein Distance)
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- 上下文匹配:根据前后文提高匹配准确度
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---
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### 5. Patch 引擎 (Rust)
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**职责**:生成和应用补丁
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**支持的 Patch 类型**:
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1. **Binary Patch**:使用 bsdiff 算法
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2. **JSON Patch**:RFC 6902 标准
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3. **Text Patch**:基于 diff 算法
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**Patch 结构**:
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```
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patch/
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├── metadata.json (版本信息、文件列表)
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├── binary/
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│ ├── file1.bpatch
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│ └── file2.bpatch
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└── json/
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└── config.jpatch
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```
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**特性**:
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- 增量更新(只传输差异)
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- 完整性校验(Hash 验证)
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- 回滚支持(保留历史版本)
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- 压缩传输(gzip/zstd)
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---
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### 6. API Server (Go)
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**框架**:Gin 或 Echo
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**架构**:
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```
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HTTP Request → Middleware (Auth, CORS, Logger) → Handler → Service → Repository → Database
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↓
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Cache (Redis)
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```
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**API 设计原则**:
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- RESTful 风格
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- 版本控制(/api/v1/...)
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- 统一错误码
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- 统一响应结构
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- OpenAPI 文档自动生成
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**核心 API**:
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- `/api/v1/translations` - 翻译管理
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- `/api/v1/glossary` - 术语管理
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- `/api/v1/sync` - 资源同步
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- `/api/v1/patches` - 补丁管理
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- `/api/v1/assets` - 资源查询
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---
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### 7. Web 后台 (Vue 3)
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**技术栈**:
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- Vue 3 + Composition API
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- TypeScript
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- Pinia (状态管理)
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- Vue Router
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- Axios
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- Element Plus / Ant Design Vue
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**模块**:
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- Dashboard(统计概览)
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- 翻译审核(Translation Review)
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- 术语管理(Glossary Manager)
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- 资源浏览(Asset Browser)
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- 用户管理(User Management)
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---
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## 数据库设计
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### PostgreSQL Schema
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```sql
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-- 翻译记忆库
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CREATE TABLE translation_memory (
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id BIGSERIAL PRIMARY KEY,
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source_text TEXT NOT NULL,
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target_text TEXT NOT NULL,
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source_lang VARCHAR(10) NOT NULL,
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target_lang VARCHAR(10) NOT NULL,
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provider VARCHAR(50),
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status VARCHAR(20) DEFAULT 'pending',
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reviewed_at TIMESTAMP,
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created_at TIMESTAMP DEFAULT NOW()
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);
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-- 术语库
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CREATE TABLE glossary (
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id BIGSERIAL PRIMARY KEY,
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term VARCHAR(255) NOT NULL,
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translation VARCHAR(255) NOT NULL,
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source_lang VARCHAR(10) NOT NULL,
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target_lang VARCHAR(10) NOT NULL,
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category VARCHAR(50),
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priority INT DEFAULT 0,
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created_at TIMESTAMP DEFAULT NOW()
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);
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-- 资源版本管理
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CREATE TABLE resource_versions (
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id BIGSERIAL PRIMARY KEY,
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version VARCHAR(50) NOT NULL UNIQUE,
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manifest_hash VARCHAR(64) NOT NULL,
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released_at TIMESTAMP,
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created_at TIMESTAMP DEFAULT NOW()
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);
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-- 更多表结构见 migrations/
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```
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---
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## 部署架构
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### 本地开发模式
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```
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开发机器 (本地)
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├── CLI (Go)
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├── Rust 库
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└── 连接 → 远程数据库服务器 (裸金属)
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├── PostgreSQL
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└── Redis
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```
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### 生产部署模式
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```
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负载均衡器
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↓
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API Server (多实例)
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↓
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├── PostgreSQL (主从)
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├── Redis (Sentinel/Cluster)
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└── CAS 存储 (分布式文件系统)
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```
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---
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## 安全设计
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1. **认证**:JWT Token
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2. **授权**:RBAC (Role-Based Access Control)
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3. **数据传输**:HTTPS/TLS
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4. **数据库连接**:SSL 加密
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5. **密码存储**:bcrypt/argon2
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6. **API 限流**:基于 Redis 的 Token Bucket
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---
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## 性能优化
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1. **缓存策略**:
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- Redis 缓存热点数据
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- 浏览器缓存静态资源
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- CAS 内容天然去重
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2. **并发控制**:
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- Go 协程池
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- Rust Tokio 异步运行时
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- 数据库连接池
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3. **数据库优化**:
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- 索引优化
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- 查询优化
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- 分区表
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---
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## 监控与日志
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- **日志**:结构化日志(JSON 格式)
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- **指标**:Prometheus + Grafana
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- **追踪**:OpenTelemetry
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- **告警**:Alertmanager
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---
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## 未来扩展
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1. **支持更多游戏**:插件化架构便于扩展
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2. **分布式存储**:CAS 可扩展到对象存储(S3/MinIO)
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3. **机器学习**:翻译质量评估、自动术语提取
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4. **协作功能**:多人实时翻译、冲突解决
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---
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更多详细设计文档:
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- [CAS 存储引擎设计](./cas-storage.md)
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- [AssetBundle 解析器设计](./assetbundle-parser.md)
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- [翻译系统设计](./translation-system.md)
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- [API 设计](../api/README.md)
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