graph TD subgraph 用户层 U1[Web 用户] --> LB[负载均衡器 Nginx] U2[App 用户] --> LB U3[小程序用户] --> LB end subgraph 接入层 LB --> APIGW[API 网关
Spring Cloud Gateway] APIGW --> Auth[鉴权服务
JWT/OAuth2] APIGW --> RateLimit[限流服务
Redis + Sliding Window] end subgraph 业务微服务层 APIGW --> Seckill[秒杀服务
Spring Boot + @Async] APIGW --> Order[订单服务] APIGW --> User[用户服务] APIGW --> Item[商品服务] Seckill --> RedisCache[Redis 集群
- 商品库存预减
- 秒杀令牌/队列
- 用户秒杀记录
- 分布式锁] Seckill --> MySQL[MySQL 主从集群
- 秒杀结果持久化
- 订单写入
- 库存最终扣减] Seckill --> MQ[消息队列 Kafka
- 异步生成订单
- 库存补偿/对账] Order --> MySQL Item --> MySQL User --> MySQL end subgraph 基础设施层 RedisCache --> RedisSentinel[Redis 哨兵/Cluster
高可用 + 10w+ QPS] MySQL --> MySQLMaster[MySQL 主库
读写分离] MySQL --> MySQLSlave[MySQL 从库
只读查询] MQ --> KafkaCluster[Kafka 集群
3 Broker + 多分区] end subgraph 运维与监控 Monitor[APM 监控
SkyWalking/Prometheus] Log[统一日志
ELK Stack] Alert[告警中心
微信/钉钉通知] Monitor --> Seckill Monitor --> RedisCache Monitor --> MySQL Monitor --> MQ end classDef service fill:#4e73df, color:white, font-weight:bold; classDef cache fill:#1cc88a, color:white, font-weight:bold; classDef db fill:#36b9cc, color:white, font-weight:bold; classDef mq fill:#f6c23e, color:black, font-weight:bold; classDef infra fill:#6f42c1, color:white, font-weight:bold; classDef monitor fill:#e74a3b, color:white, font-weight:bold; class APIGW,Auth,RateLimit,Seckill,Order,User,Item service; class RedisCache,RedisSentinel cache; class MySQL,MySQLMaster,MySQLSlave db; class MQ,KafkaCluster mq; class Monitor,Log,Alert monitor;