A. Reduce the TTL value for keys on the node.
B. Choose a larger node type.
C. Test different values in the parameter group for the maxmemory-policy parameter to find the ideal value to use.
D. Increase the number of nodes.
E. Monitor the EngineCPUUtilization Amazon CloudWatch metric. Create an AWS Lambda function to delete keys on nodes when a threshold is reached.
F. Increase the TTL value for keys on the node.

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