A.Responding to business surges with high risk

B.Lack of data support for business strategies

C.Poor user experience

D.Security is difficult to guarantee

A.Number of people used

B.Number of nodes

C.Computing resource usage time, cu hour

D.Number of clusters

A.No need to persist data for the application

B.Each instance has a unique network identifier

C.No need to maintain state for the app

D.The results of each instance for the same request response are exactly the same

A.T6

B.S6

C.H3

D.C6

A.The cluster is highly available and can automatically recover from failures in seconds

B.Compatible with SQL syntax

C.Uninterrupted business, automatic horizontal split and smooth expansion

D.Can withstand PB-level data volume, million-level concurrency, ten times as much as a single-machine database connection