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Announcing Valkey 9.1 for Amazon ElastiCache

Database Blog



This article announces Valkey 9.1 support for Amazon ElastiCache, bringing performance and operational improvements to managed in-memory workloads.

  • Redesigned I/O threading achieves up to 2.1 million requests per second; throughput improvements up to 17% in tested workloads
  • Memory efficiency gains: 20% reduction for small strings, 10% for sorted sets
  • Database-level access control lists enable fine-grained isolation for multi-tenant clusters
  • New commands: HGETDEL for atomic retrieval/deletion, MSETEX for bulk expiring keys, CLUSTERSCAN for cluster-wide key scanning
  • Enhanced observability with main/I/O thread metrics and JSON-formatted server logs

Valkey 9.1 helps customers reduce infrastructure costs, strengthen workload isolation, and operate large deployments with greater efficiency and confidence.



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