1. stabilized server component (ECS, RDS, OSS, SLS)
2. stable enterprise distributed applications (EDAS, HSF), expensive! Small businesses consider dubbo family bucket or spring replacement
3.config, namely distribution center, includes hot update function, is the cornerstone of a large-scale distributed systems, data is the most basic configuration of the system is also the most difficult design SAAS
4.gateway, all underlying logic interface processing, including authentication, encryption and other security-related operations,
5.sharding, the foundation supports high concurrency database
6.mq, shared center-triggered data communication module mostly relied on, but try to avoid for high-precision operations, can not guarantee 100% packet loss