Outdated ElastiCache Engine Version Incurring Extended Support Charges

Explanation

This inefficiency occurs when ElastiCache clusters continue running engine versions that have moved into extended support. While the service remains functional, AWS charges an ongoing premium for extended support that provides no added performance or capability. These costs are typically avoidable by upgrading to a version within standard support.

Relevant Billing Model

ElastiCache applies additional extended support charges when clusters run engine versions outside standard support. These surcharges are added on top of normal node-hour pricing and accrue continuously while the cluster remains on an outdated version.

Detection

• Review whether ElastiCache clusters are running engine versions no longer in standard support
• Assess whether extended support is required for compatibility or risk management
• Identify clusters that have remained on older versions beyond planned upgrade timelines

Remediation

• Upgrade clusters to engine versions within standard support
• Establish periodic engine version reviews to avoid future extended support charges