> For the complete documentation index, see [llms.txt](https://gitbook.fantasticmao.cn/tech/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook.fantasticmao.cn/tech/fen-bu-shi-xi-tong/xi-tong-she-ji-si-lu.md).

# 系统设计思路

模块划分

数据库选择/设计、API 设计

缓存设计、MQ 设计

稳定性：应用伸缩、数据分片/备份

高可用：限流、熔断、降级