Which of the following statements about PolarDB's endpoints is NOT correct?

In the context of PolarDB, the correct statement identifying that one of the options is not correct relates to the function of endpoints. The primary endpoint is indeed designed to handle both read and write operations. However, it typically does not support read/write splitting, which is a function that would delegate some read operations to read-only replicas to distribute the load.

For the other statements: the read-only endpoint does serve the purpose of supporting analytics by allowing read requests without affecting the performance of write operations. The standby endpoint is also accurately described, as it is intended to handle failover scenarios seamlessly to ensure high availability and reliability of the database service.

Understanding these functionalities is crucial for effectively utilizing PolarDB's architecture for various database workloads, including ensuring efficient data throughput and resilience in applications relying on this cloud database service.