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.
Features
Which version of Redis is ApsaraDB for Redis compatible with?
What commands and operations of ApsaraDB for Redis are compatible with Redis?
What is the relationship between ApsaraDB for Redis and open source Redis?
How many databases does a single ApsaraDB for Redis instance support?
Do all ApsaraDB for Redis instances have master and replica nodes?
Can multiple replica nodes be configured for an ApsaraDB for Redis instance?
Does ApsaraDB for Redis support failovers between master and replica nodes?
Does ApsaraDB for Redis support distributed cluster instances?
Redis CSRF vulnerability analysis and security measures available for ApsaraDB for Redis
What is the difference between ApsaraDB for Redis and open source Redis?
Networks and connections
How do I obtain the endpoint and ID of an ApsaraDB for Redis instance?
How can I connect to an ApsaraDB for Redis instance by using redis-cli?
Does ApsaraDB for Redis support Redis clients such as Jedis?
Do I need to install Redis on an ECS instance to use ApsaraDB for Redis?
Do I need a password to connect to an ApsaraDB for Redis instance?
How do I troubleshoot connection issues in ApsaraDB for Redis?
How do I troubleshoot connection issues in ApsaraDB for Redis instances?
How do I connect an ECS instance and an ApsaraDB for Redis instance in different networks?
Can an ECS instance in a VPC connect to an ApsaraDB for Redis instance in the classic network?
How do I troubleshoot connection issues caused by failed DNS resolutions?
How do I use the telnet command to test connectivity to the port used by ApsaraDB for Redis?
Why am I unable to select an existing vSwitch when I create an ApsaraDB for Redis instance?
Databases
Database usage
What is the size of each database on an ApsaraDB for Redis instance, and how can I choose databases?
Why is the memory usage of a new ApsaraDB for Redis instance not equal to 0?
Why do I receive an SMS message or email indicating that a failover is triggered?
Why is the data of the master node not synchronized to replica nodes?
Why am I unable to change the configurations of a classic cluster instance?
Performance and monitoring
Persistence
Parameter settings
Expiration policies