> For the complete documentation index, see [llms.txt](https://zhenghe.gitbook.io/open-courses/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zhenghe.gitbook.io/open-courses/system-design.md).

# System Design

- [Twitter](https://zhenghe.gitbook.io/open-courses/system-design/twitter.md)
- [Cache Consistency & Coherence](https://zhenghe.gitbook.io/open-courses/system-design/cache-consistency-and-coherence.md)