AWS Elasticache Policies

Tip

Policy names are prefixed with AWS Elasticache –

Policy name

Duration

Condition 1

(and) Condition 2

Category

Category

Memcached – CPU Threshold Exceeded

5 min

aws.elasticache.cpuutilization has a static threshold >90%

CRITICAL

The Memcached Node has exceeded the CPU threshold of 90%. The cache cluster may need to be scaled, either by using a larger node type or by adding more nodes.

Memcached – Elevated CPU Utilization

30 min

aws.elasticache.cpuutilization has an upper baseline deviation + has a static threshold> 50%

WARNING

CPU utilization for the Memcached Node has been higher than expected for at least 30 minutes.

Memcached – Elevated Swap Usage

5 min

aws.elasticache.swapusage has a static threshold >53428800

CRITICAL

Swap usage on the Memcached Node has exceeded 50 MB. It is recommended that you increase the value of the ConnectionOverhead parameter.

Redis – Elevated Command Executions

30 min

aws.elasticache..*cmds has an upper baseline deviation + an upper contextual deviation

WARNING

One or more command types on the Redis node have been experiencing a higher than expected number of executions for at least 30 minutes.

Redis – Elevated CPU Utilization

30 min

aws.elasticache.cpuutilization has an upper baseline deviation + a static threshold > 30%

WARNING

CPU utilization for the Redis Node has been higher than expected for at least 30 minutes.

Redis – Elevated Network Activity

30 minutes

aws.elasticache.networkbytesin has an upper baseline deviation + an upper contextual deviation

aws.elasticache.networkbytesouthas an upper baseline deviation + an upper contextual deviation

WARNING

Network activity to/from the Redis node has been higher than expected for at least 30 minutes.

Redis – Elevated Number of New Connections

30 min

aws.elasticache.newconnections has an upper baseline deviation + an upper contextual deviation

WARNING

The number of new connections being opened to the Redis node has beenhigher than expected for at least 30 minutes.

Redis – Elevated Replication Lag

30 min

aws.elasticache.replicationlag has an upper baseline deviation

WARNING

Replication lag for the Redis node has been higher than expected for atleast 30 minutes.

Redis – Elevated Swap Usage

30 min

aws.elasticache.swapusage has an upper baseline deviation

WARNING

Swap usage on the Redis Node has been higher than expected for at least30 minutes. Extended swapping indicates a low physical memory condition,and can lead to performance degradation.

Redis – Extended Period of Evictions

30 min

aws.elasticache.swapusage has a static threshold > 0

WARNING

Evictions for the Redis node have been greater than 0 for at least 30minutes. This could indicate a low memory condition, and may impactperformance.

Redis – Low Cache Hit Rate

30 min

aws.elasticache.cachehitrate has an upper baseline deviation + an upper contextual deviation

WARNING

The cache hit rate for the Redis node has been lower than expected forat least 30 minutes.