diff --git a/addons/datastores.mdx b/addons/datastores.mdx
index 31ece02..c5689f1 100644
--- a/addons/datastores.mdx
+++ b/addons/datastores.mdx
@@ -127,6 +127,8 @@ Provisions an Amazon Elasticache replication group with:
 - Automatic failover if the primary fails
 - Minimal downtime during modifications
 
+When creating or editing an Elasticache datastore, the instance type selector lists each supported node type alongside its vCPU count and memory (in GiB) to help you right-size the cluster. For example, `cache.m7g.large (2 vCPU, 6.4 GiB)` indicates a node with 2 vCPUs and 6.4 GiB of memory.
+
 ---
 
 ## Monitoring