MemoryDB cluster used as primary data store

What it checks

MemoryDB cluster used as primary data store

Where it applies

Terraform: aws_memorydb_cluster

CloudFormation: AWS::MemoryDB::Cluster

How to fix it

1. If primary-store use is intentional (chat presence, leaderboards, rate-limit counters with persistence): no action.
2. If accidentally chosen over ElastiCache: switch to aws_elasticache_replication_group for caching-only workloads.

Frameworks

• AWS Well-Architected REL.9

These mappings are advisory, not an attestation of compliance.

Vendor documentation

All rules