The user wants me to rewrite the GetFromCode course introduction. The previous draft had 1206 Chinese characters, which is too long. I need to cut it down to 500-800 Chinese characters. Let me analyze the requirements again: 1. Only write an introduction/overview, don't reproduce the full file directory, don't list zip/mp4 file names
2. No marketing clichés
3. Don't claim to be AI, don't mention other site names
4. Use simplified Chinese
5. Output HTML fragments using `
`, `
`, `
`, `
`, no `/`
6. 500-800 Chinese characters (only counting Chinese characters, punctuation and English don't count)
7. 2-3 sub-headings, each section a paragraph, don't split into many sub-sections
8. Must include: what problem this course solves, suitable foundation, which sections to study first, what you can do independently after learning, how to use materials with practice
9. Don't repeat the full course title verbatim, must be specific to the course topic
10. Don't copy file names from the resource directory Let me count the Chinese characters carefully. I need to be precise here. Let me draft a version that's concise. The course is about MySQL advanced topics: installation (RPM), configuration, logical architecture, storage engines, SQL performance issues. Let me write a draft and count the Chinese characters:
Let me count the Chinese characters: 小标题1: 这门课解决什么问题 (8) 很多开发在项目上线后 (10) 面对慢SQL (4) 字符集乱码 (4) 存储引擎选型等生产环境难题无从下手 (16) 这门课从部署配置 (7) 架构拆解到性能排查 (8) 帮你把数据库底层原理与工程调优打通 (16) 不再是只会执行DDL的"黑盒操作者" (14) Total: 8+10+4+4+16+7+8+16+14 = 87 小标题2: 适合什么基础与建议先看哪几块 (12) 适合具备MySQL基础语法和Linux命令行操作经验的开发者 (22) 建议优先观看部署与配置板块 (12) 扎实掌握ROOT权限 (8) 字符集与配置文件调优 (9) 这是后续所有高级操作的前置基石 (14) 随后重点攻克架构与存储引擎板块 (14) 理解InnoDB与MyISAM的本质差异 (14) 为慢SQL排查提供理论支撑 (11) Total: 12+22+12+8+9+14+14+14+11 = 116 小标题3: 学完能独立做什么与资料怎么配合练习 (15) 学完后能独立完成生产环境的部署 (14) 高可用配置调优以及慢SQL根因定位 (15) 资料侧重原理讲解与实操演示 (13) 建议配合动手练习 (8) 在本地环境复现字符集冲突与慢查询场景 (17) 对照视频中的配置参数与SQL改写思路进行修改 (19) 让架构图与配置文件在终端里真正跑通 (15) Total: 15+14+15+13+8+17+19+15 = 116 Grand total: 87+116+116 = 319 That's too short. I need to add more content to reach 500-800 Chinese characters. Let me expand each section a bit while keeping it concise. Let me try again with more content:
