⭐ Repository → 📁 Compliance Engine → 📁 CloudAware → 📁 AWS → 📁 ElastiCache

🛡️ AWS ElastiCache Memcached Cluster is underutilized🟢

• Contextual name: 🛡️ Memcached Cluster is underutilized🟢
• ID: /ce/ca/aws/elasticache/memcached-cluster-underutilized
• Tags:
  • 🟢 Policy with categories
  • 🟢 Policy with type
  • 🟢 Production policy
• Policy Type: COMPLIANCE_POLICY
• Policy Categories: COST

Logic

• 🧠 prod.logic.yaml🟢
  • 📗 AWS ElastiCache Cluster
  • 🔌 AWS ElastiCache Cluster - object.extracts.yaml
  • 🧪 test-data.json

Description

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Description

This policy identifies AWS ElastiCache for Memcached Clusters that appear to be underutilized based on their average CPU utilization over the past 30 days.

Rationale

Operating underutilized ElastiCache clusters results in unnecessary cloud costs. By identifying and rightsizing these clusters, you can reduce expenses while maintaining application performance.

Impact

Before downsizing or decommissioning a cluster, verify that it is not supporting workloads with infrequent but high CPU demands. Premature rightsizing may introduce performance bottlenecks during peak usage periods.

Audit

This policy flags an AWS ElastiCache Cluster for Memcached as INCOMPLIANT if its CPU Utilization, Average, % metric is below 40% over the last 30 days.

ElastiCache Clusters for Redis are marked as INAPPLICABLE.

Clusters created within the last 30 days or not in an available Status are also marked as INAPPLICABLE.

Remediation

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Remediation

From Command Line

Check Allowed Modifications for the Cluster

aws elasticache list-allowed-node-type-modifications --cache-cluster-id {{cache-cluster-id}}

Note the ScaleDownModifications options.

To Downsize the Cluster

You can modify an existing cluster's node type using the modify-cache-cluster command:

aws elasticache modify-cache-cluster \
    --cache-cluster-id {{cache-cluster-id}} \
    --cache-node-type {{new-node-type}} \

The --apply-immediately flag applies the change immediately; omit it to apply during the next maintenance window.

policy.yaml

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Linked Framework Sections

Section	Sub Sections	Internal Rules	Policies	Flags	Compliance
💼 Cloudaware Framework → 💼 Resource Right-Sizing			15		no data
💼 Cloudaware Framework → 💼 Workload Efficiency			24		no data