A.Instance-level configuration takes effect only for this instance

B.Instance-level configurations also take effect on other instances

C.After the configuration is saved, the service needs to be restarted to take effect

D.Service-level configurations can take effect for all instances

A.Turn off Transparent Huge Pages

B.Modify the minimum number of tcp connections in Linux

C.Simplified key names and key values

D.Modify the Linux kernel memory allocation strategy or execute sysctl

A.Prevent replay attacks

B.Can prevent brute force cracking

C.Support two-way authentication

D.have higher performance

A.Retrieval based on score

B.Term-Based Search

C.Based on full-text search

D.Retrieval based on metadata

A.The read-write data interface of CTBase uniformly encapsulates the interface defined by the row, automatically merges and parses cold fields, and does not need to be merged and interpreted in the application

B.The java API of CTBase provides a set of interfaces for HBase connection pool management, and internal connection sharing reduces the difficulty of client application development.

C.CTBase provides a set of WebUI for metadata definition, provides a table design tool only for medical use, and reduces the difficulty of table design

D.CTBase is a cluster table development framework based on HBase