# Page Not Found

The URL `chapter-8-design-a-url-shortener` does not exist.

You might be looking for one of these pages:
- [第08章：短网址设计](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-yi-juan/chapter-08-design-a-url-shortener.md)
- [第09章：网络爬虫设计](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-yi-juan/chapter-09-design-a-web-crawler.md)
- [第04章：设计一个限流器](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-yi-juan/chapter-04-design-a-rate-limiter.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06章：key-value 存储设计](https://learning-guide.gitbook.io/system-design-interview/xi-tong-she-ji-mian-shi-nei-mu-zhi-nan-di-yi-juan/chapter-06-design-a-key-value-store.md)

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