This recommendation recommend on RI purchase and is based on customer historical usage.

These recommendation analyze all incurred usage eligible to be covered by an RI (e.g. On-Demand usage) and using our unique algorithms to simulate possible combinations of RI’s that would cover that usage.

Recommendations are based on the resource level, not individual node instance types.

For example, if an ElastiCache cluster contains multiple nodes with partial RI coverage, more than one recommendation may be generated. Each recommendation represents different combinations of term lengths and payment options.

• Num Of Days, default 21 days.
• Preferred Plan, default standard 1 year no upfront.

Umbrella.

Yes.

This recommendation identifies ElastiCache as idle and that can be deleted.

Identifying ElastiCache with no more than 1 connection within the last 7 days and recommending to terminate the instance (subject to preferences).

1. Days To Check, default 7 days.

Umbrella.

No.

This recommendation identifies ElastiCache clusters that are approaching the start of Extended Support charges or are already incurring them, helping you avoid unexpected costs and plan timely engine version upgrades. By default, the recommendation is triggered 90 days before Extended Support fees take effect, and you can customize this lead time in the recommendation preferences to receive earlier notifications based on your operational needs.

Umbrella retrieves the exact version of each ElastiCache clusters.

• Umbrella extracts the ElastiCache versions.
• Umbrella extracts the extended support compatible version using this api describe_cache_engine_versions.

💡

The following message will appear in the recommended version in case permissions are missing: "Unable to analyze the version due to a missing elasticache:DescribeCacheEngineVersions permission".

• Each ElastiCache version is scanned against the API results.
• In case the extended support for this version is going to be applied in the next x days (subject to the preference), a recommendation will be triggered. ElastiCache Support dates
• In case extended support is already applied, a recommendation will be triggered.
• The recommendation specifies:
  • The current and recommended version.
  • The extended support start date.
• Additional enrichment fields.

Days Before Expiration, default 90 days.

Umbrella.

No. Since the extended support for ElastiCache will be effective starting from Jan 31, 2026, we cant confirm how it will appear in the invoice, and so we cannot take that into account to rely on the invoice without confirmation.

• elasticache:DescribeCacheEngineVersions