Amazon ElastiCache advanced its in-memory data store offering by adding durability support with a Multi-AZ transactional log mechanism. This enables data persistence across availability zones, facilitating rapid failover and recovery to safeguard against data loss. Two modes are available: synchronous writes guaranteeing zero data loss with single-digit millisecond latency, and asynchronous writes preserving microsecond write latency but risking up to 10 seconds of data loss in rare failures.
This durability support broadens ElastiCache’s applicability to workloads needing low-latency reads without compromising data safety, including AI agent memory, real-time inventory, and payment tokenization. The new features are deployed across AWS Regions globally and begin with ElastiCache Valkey 9.0.
Source & further reading
Amazon ElastiCache for Valkey now supports durability ↗Source published 2026-06-02. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.