Each PolarDB cluster consists of one primary node and one or more read-only nodes. The system only support manually switch over services from the primary node to a read-only node.
PolarDB cluster supports Manually and Automatically switch over services between primary and read-only nodes. https://www.alibabacloud.com/help/doc-detail/141229.htm?spm=a2c63.p38356.b99.113.36df231dK2DVX0
Which of the following is the high-availability service level that is specified in the ApsaraDB RDS Service Level Agreement (SLA)?
DTS (Data Transmission Service) must have access to a database user account on both the target and source database, in order to work.
PolarDB for MySQL archive databases use log-structured merge-trees (LSM trees) and the Zstandard (ZSTD) data compression algorithm to increase the data compression ratio. How much storage can be saved, at most?
Data Management (DMS) provides features related to data warehouse development to support task orchestration and recurring scheduling. Which of the following features are being developed? (Number of correct answers: 3)
Which of the following deployment architectures are supported by Alibaba Cloud ApsaraDB for MongoDB? (Number of correct answers: 3)
Which of the following is the lowest recovery point objective (RPO) for Database Backup Service?