九章算法-系统设计#2 秒杀系统和订票系统

系统设计考察内容

1. 系统架构设计能力

2. 知识广度和深度

3. 综合能力评估

Scenario

商家端：

1. 新建秒杀活动
2. 配置秒杀活动

用户端

1. 商品秒杀页面
2. 购买
3. 下单
4. 付款

QPS：Average 1000 QPS， 秒杀时 10w QPS， 100 倍的QPS

Service

Major service

1. Seckill service
2. Commodity Info & Stock service
3. Order service
4. Payment service

Storage

Commodity_info {id = 1; name = 2; description = 3; price = 4;}

Seckill_info {id = 1; name = 2; commodity_id = 3; price = 4; number = 5;}

Order_info {id = 1; commondity_id = 2; seckill_id = 3; user_id = 4; is_paid = 5;}

Stock_info {id = 1; commondity_id = 2; seckill_id = 3; stock = 4;}