# 第二部分：核心技术与策略

- [第四章 上下文写入与存储](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/04_write.md)
- [4.1 外部存储与记忆系统](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/04_write/4.1_external_storage.md)
- [4.2 记忆架构设计](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/04_write/4.2_memory_architecture.md)
- [4.3 知识库构建与管理](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/04_write/4.3_knowledge_base.md)
- [4.4 向量数据库实践](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/04_write/4.4_vector_database.md)
- [本章小结](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/04_write/summary.md)
- [第五章 上下文选择与检索](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/05_select.md)
- [5.1 检索增强生成原理](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/05_select/5.1_rag_principles.md)
- [5.2 文档分块策略](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/05_select/5.2_chunking.md)
- [5.3 嵌入模型与语义搜索](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/05_select/5.3_embeddings.md)
- [5.4 重排序与相关性优化](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/05_select/5.4_reranking.md)
- [5.5 混合检索与高级检索增强生成](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/05_select/5.5_hybrid_search.md)
- [本章小结](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/05_select/summary.md)
- [第六章 上下文压缩与优化](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/06_compress.md)
- [6.1 信息密度与压缩原理](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/06_compress/6.1_compression_principles.md)
- [6.2 摘要与信息提取](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/06_compress/6.2_summarization.md)
- [6.3 对话历史管理](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/06_compress/6.3_conversation_history.md)
- [6.4 上下文窗口优化策略](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/06_compress/6.4_window_optimization.md)
- [6.5 压缩策略案例分析](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/06_compress/6.5_compression_cases.md)
- [本章小结](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/06_compress/summary.md)
- [第七章 上下文隔离与结构化](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/07_isolate.md)
- [7.1 结构化上下文设计](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/07_isolate/7.1_structured_context.md)
- [7.2 XML 标签与指令分层](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/07_isolate/7.2_xml_tags.md)
- [7.3 系统提示词设计](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/07_isolate/7.3_system_prompts.md)
- [7.4 多任务上下文隔离](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/07_isolate/7.4_task_isolation.md)
- [7.5 隔离策略案例分析](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/07_isolate/7.5_isolation_cases.md)
- [本章小结](https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le/07_isolate/summary.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://yeasy.gitbook.io/context_engineering_guide/di-er-bu-fen-he-xin-ji-shu-yu-ce-le.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.