If you receive an error message when you use ApsaraDB for Redis, you can refer to the list of ApsaraDB for Redis error codes to view the detailed information about the message. For other issues, you can refer to the following topics for troubleshooting.
Networks and connections
Can data be automatically and evenly distributed to data shards after I upgrade an ApsaraDB for Redis standard instance to an ApsaraDB for Redis cluster instance or change the number of data shards of an ApsaraDB for Redis cluster instance?
Performance and monitoring