Exploring the New IPv6 and Dual Stack Connectivity in Amazon ElastiCache Serverless

On April 2, 2026, Amazon Web Services introduced Amazon ElastiCache Serverless now supports IPv6 and dual stack connectivity , adding support for IPv6 and dual stack connectivity on ElastiCache Serverless. This expands beyond the previous IPv4-only model and allows a cache to accept connections over both IPv4 and IPv6 simultaneously, enabling more flexible connectivity patterns. In this post, I put the new dual stack capability to the test by verifying IPv4 and IPv6 connectivity on ElastiCache S