系统设计
设计可扩展的服务：缓存、队列和数据库。
System design is choosing the boxes and arrows behind an app, and knowing how they behave when millions of people show up. This track starts with requirements and honest back-of-the-envelope numbers, grows one server into many behind a load balancer, and adds caches and CDNs. Then it tackles the hard parts: scaling the database, queues and duplicate messages, rate limits, consistency, and seeing inside a running system.
Most lessons are concepts, small numbers and diagrams, with code only where it makes an idea concrete. The track ends with you designing a home feed and a live leaderboard, step by step.
- 课时
- 14
- 时长
- 2 小时
- 级别
- 中级
本课程的内容目前为英文。
- 铜牌 可挑战
- 银牌 可挑战
- 金牌 未解锁
准备好证明自己了吗？
三场考试正等着你：铜牌、银牌和金牌。
学完后你将能够
- Turn requirements into load estimates with back-of-the-envelope math
- Scale stateless servers behind a load balancer with health checks
- Use caches, TTLs and CDNs without serving stale or unreachable content
- Scale a database with pooling, replicas and, as a last resort, sharding
- Move slow work to queues and make consumers safe against duplicates
- Choose consistency per feature and alert only on what users feel
学习旅程
1 第 1 单元From one server to many
Requirements and estimates, stateless servers behind a load balancer, caches and CDNs.
0 / 42 第 2 单元Data and events at scale
Scale the database, use queues safely, limit traffic, choose consistency and watch it all run.
0 / 63 第 3 单元Next steps
Real-time features, search, multiple regions and cost.
0 / 4