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Python+LangChain从零搭建企业级RAG知识库

  • 2026-06-30 08:41:36
Python+LangChain从零搭建企业级RAG知识库

Python+LangChain从零搭建企业级RAG知识库

🎯本文先从企业文档里检索相关内容，再交给大模型生成准确、可溯源的回答来解决大模型不懂企业内部文档、容易瞎编、知识过时的问题。
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✅从RAG 原理、架构流程，到文档加载、文本分块、向量存储、RAG 核心链的可运行代码，再到FastAPI 接口封装、部署启动、实际调用，都提供了全套可直接运行的代码，覆盖所有核心模块。
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⭕最后还补充了企业落地常用的优化方案，比如检索精排、长文档处理、权限控制、缓存降本等，都能直接用。
#大模型#大模型应用#大模型应用开发#RAG#rag#Agent#大模型入门#AI大模型#大语言模型#LLM#程序员#前端#后端#互联网

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  140. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000542s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000760s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002261s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000366s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000598s ]
  6. SELECT * FROM `set` [ RunTime:0.000232s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000658s ]
  8. SELECT * FROM `article` WHERE `id` = 491890 LIMIT 1 [ RunTime:0.000589s ]
  9. UPDATE `article` SET `lasttime` = 1783123946 WHERE `id` = 491890 [ RunTime:0.017827s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.001296s ]
  11. SELECT * FROM `article` WHERE `id` < 491890 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000571s ]
  12. SELECT * FROM `article` WHERE `id` > 491890 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000711s ]
  13. SELECT * FROM `article` WHERE `id` < 491890 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003997s ]
  14. SELECT * FROM `article` WHERE `id` < 491890 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002668s ]
  15. SELECT * FROM `article` WHERE `id` < 491890 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001736s ]
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