Which of the following is the mainstream document database?

Deploy the Guestbook application on Servicestage. Guestbook is composed of three container application components: Frontend is the front store component, and the code logic is implemented in Frontend to achieve the following two goals: 1 Reduce the communication between Frontend and redis-maste Possible network loss: 2 can make the primary and backup storage scattered on different nodes, reducing the impact of downtime. Which of the following statement are correct? (Multiple choice)

Which of the following is not a capability of the "Cloud DBA function of a Huawei Cloud RDS instance?"

Both Spark and MapReduce are the most basic distributed computing frameworks in Hadoop. Regarding the description of the common points between the two, which of the following is correct?

Which of the following databases has excellent geographic location computing functions and complete transaction support?