Posted On: Aug 14, 2020

Amazon ElastiCache for Redis now allows you to scale your Redis Clusters up to 500 nodes. Redis (cluster mode enabled) configuration allows you to partition your data across multiple shards and offers better scalability, performance, and availability. With this announcement, you can double your cluster size from 250 nodes to 500 nodes, thereby supporting larger memory storage capacity of up to 340 TB of memory and improved throughput per cluster. You can choose to configure a 500-node cluster that ranges between 83 shards (one master and five replicas per shard) and 500 shards (single master and no replicas). 

Support for 500-node cluster is available with Amazon ElastiCache for Redis starting with Redis version 5.0.6, in all AWS regions. You can create a new cluster or scale your existing cluster to add shards using online cluster resizing. 

To increase a cluster size beyond the default maximum of 90 nodes, please request a service limit increase for “nodes per cluster per instance type” using the AWS Support Center. For more information, refer Amazon ElastiCache documentation or log in to the AWS Management Console.