from pydantic_settings import BaseSettings class Settings(BaseSettings): """应用配置,通过环境变量注入""" # 应用 app_name: str = "QMDSearch" log_level: str = "info" # 嵌入模型 embedding_provider: str = "openai" # openai | local openai_api_key: str = "" openai_base_url: str = "https://api.openai.com/v1" embedding_model: str = "text-embedding-3-small" embedding_dimension: int = 1536 # Ollama 本地模型(用于文档三级总结) ollama_base_url: str = "http://localhost:11434" ollama_model: str = "qwen2.5:1.5b" # 备选: qwen2.5:3b ollama_embedding_model: str = "bge-m3" # embedding_provider=local 时使用的嵌入模型 # Qdrant qdrant_host: str = "localhost" qdrant_port: int = 6333 # Redis redis_url: str = "redis://localhost:6379/0" # 检索参数 retrieval_top_k: int = 20 # L2 语义检索召回数 retrieval_final_k: int = 5 # L3 重排后返回数 # 文档入库参数 summary_min_text_length: int = 500 # 低于此字符数触发 2.5 级回退 # 入库异步任务 ingest_max_concurrency: int = 2 # 入库后台任务并发上限 ingest_task_ttl_done: int = 86400 # 任务状态 Redis 保留秒数(进行中与已完成,24h) ingest_task_ttl_failed: int = 604800 # 失败任务状态 Redis 保留秒数(7 天) # 知识分类(taxonomy) taxonomy_path: str = "" # taxonomy JSON 文件路径,为空用内置默认 classify_confidence_threshold: float = 0.6 # 低于此值归 uncategorized classify_max_categories: int = 3 # query 路由命中类目数上限,超过走全库兜底 # 分层检索参数 l1_doc_top_n: int = 10 # L1 层候选文档数 l2_section_top_n: int = 5 # L2 层候选 section 数 l3_top_n: int = 10 # L3 层定位数 sparse_enabled: bool = True # 是否启用稀疏检索 cache_ttl: int = 300 # Redis 缓存秒数 # 分块参数 chunk_max_chars: int = 800 # chunk 超长二次切分阈值 model_config = {"env_prefix": "", "case_sensitive": False} settings = Settings()