# Page Not Found

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## Suggested Pages

You may be looking for one of the following:
- [第04章：分布式消息队列](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-er-juan/chapter-04-distributed-message-queue.md)
- [第01章：邻近服务](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-er-juan/chapter-01-proximity-service.md)
- [第10章：设计一个通知系统](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-yi-juan/chapter-10-design-a-notification-system.md)
- [第12章：设计一个聊天系统](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-yi-juan/chapter-12-design-a-chat-system.md)
- [第13章：设计一个搜索自动完成系统](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-yi-juan/chapter-13-design-a-search-autocomplete-system.md)

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### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-er-juan/chapter-04-distributed-message-queue.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.

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Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://learning-guide.gitbook.io/system-design-interview/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-er-juan/chapter-04-distributed-message-queue.md`).

You may also use `Accept: text/markdown` header for content negotiation.