Amazon ElastiCache adds Valkey 9.1 support
Amazon ElastiCache now supports Valkey 9.1, offering enhanced throughput, memory efficiency, and access control for node-based clusters. This upgrade benefits users by improving performance, reducing resource consumption, and simplifying access management through new commands and metrics. The new version is available now for new and existing ElastiCache clusters, with details available in the official launch blog.
- →Support for Valkey 9.1
- →Simplified workflows with new commands
- →Performance and efficiency improvements
- →Enhanced operational visibility
Features (2) ›
- Support for Valkey 9.1
Amazon ElastiCache now supports Valkey 9.1, providing higher throughput, improved memory efficiency, and stronger access control. This new version includes a redesigned I/O threading model, database-level access control lists, and new commands like HGETDEL and MSETEX.
- Simplified workflows with new commands
New commands such as HGETDEL for atomic hash field retrieval and deletion, MSETEX for setting multiple keys with a shared expiration, and CLUSTERSCAN for cluster-wide key iteration are introduced. These simplify common application patterns that previously required multi-step client logic.
Enhancements (2) ›
- Performance and efficiency improvements
Valkey 9.1 in ElastiCache offers up to 17% higher throughput due to its redesigned I/O threading model. It also reduces memory usage for strings under 128 bytes by up to 20%.
- Enhanced operational visibility
The release adds new main-thread and I/O-thread usage metrics to ElastiCache, enabling better operational visibility for users managing their clusters.
https://aws.amazon.com/about-aws/whats-new/2026/06/amazon-elasticache-valkey-9-1/