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DynamoDB Accelerator (DAX)

  • Fully-managed, highly available, seamless in-memory cache for DynamoDB
  • Microseconds latency for cached reads & queries
  • Doesn't require application logic modification (compatible with existing DynamoDB APIs)
  • Solves the "Hot Key" problem (too many reads)
  • 5 minutes TTL for cache (default)
  • up to 10 nodes in the cluster
  • Multi-AZ (3 nodes minimum recommended for production)
  • Secure (Encryption at rest with KMS, VPC, IAM, CloudTrail)

DAX vs ElastiCache