ElastiCache waste check
ElastiCache Extended Support Cost
elasticache_extended_support_cost
What it finds
ElastiCache Extended Support Cost: one of the ElastiCache checks in the database optimization group. Checks in this group look for: database capacity that is idle, oversized for its load, kept past its useful life, or priced on a mode that does not fit how it is used.
Why it costs money
Managed databases bill for provisioned instances, storage and backups around the clock, so unused or oversized capacity is a standing cost.
How it is detected
ElastiCache Redis OSS 4/5/6 cluster in warning window or active Extended Support surcharge state (Valkey and Memcached have no Extended Support)
Detection confidence: HIGH. This is the criterion from our public docs. It runs in a local scan with your own read-only credentials.
AWS's own tools
None of Trusted Advisor, Cost Optimization Hub or Compute Optimizer flags this.
Checked against the AWS documentation.
Run it yourself
Nothing leaves your machine. The local scan has no telemetry.