Amazon CloudWatch
User Guide

Dimensions for ElastiCache Metrics

All ElastiCache metrics use the AWS/ElastiCache namespace and provide metrics for a single dimension, the CacheNodeId, which is the automatically-generated identifier for each cache node in the cache cluster. You can find out what these values are for your cache nodes by using the DescribeCacheClusters API or describe-cache-clusters command line utility. For more information, see DescribeCacheClusters in the Amazon ElastiCache API Reference and describe-cache-clusters in the AWS CLI Command Reference.

Each metric is published under a single set of dimensions. When retrieving metrics, you must supply both the CacheClusterId and CacheNodeId dimensions.