A.Focus on the project implementation phase throughout the entire product development cycle

B.Take the overall direction and guide local implementation

C.Guided by strategic issues and focus on tactical issues

D.Focus on high-level design and participate in the design of functional modules

A.Database sub-database sub-table

B.Open compatibility, strong scalability

C.Separation of dynamic and static: the flow of dynamic pages and the flow of static pages are separated

D.System decoupling

E.Can accurately estimate system performance and capacity

A.EvS

B.CDN

C.OBS

D.SFS

A.Cgroup

B.namespace

C.SELinux

D.aufs

A.Kafka

B.Flink

C.MapReduce

D.Hbase