The error message you are encountering, "error moved 4757 172.17.0.4 6379 redis-cluster kubernetes", indicates that the requested key has been moved to another node in your Redis cluster running on Kubernetes. The "Moved" response is a part of Redis Cluster's design to enable automatic sharding and resharding of data. In this case, the number "4757" refers to the hash slot that the key belongs to, while "172.17.0.4" and "6379" represent the IP address and port number of the new node containing the requested key, respectively.
To resolve this issue, you'll need to ensure that your client application or Redis library supports Redis Cluster mode. Check if your current Redis client library supports it, or switch to a compatible library if necessary. The compatible library will automatically handle redirections to the correct node when a "MOVED" error occurs. Alternatively, if using native commands in your application, upon receiving a "MOVED" error, you should parse the error message and resend the command to the new node specified by the IP address and port number. Additionally, consider implementing connection pooling to manage connections to multiple nodes more efficiently and refactor your application logic to minimize the number of requests made across different nodes to reduce latency.
Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.