by shigemk2


AWS::ElastiCache::ReplicationGroup NumNodeGroups

An optional parameter that specifies the number of node groups (shards) for this Redis (cluster mode enabled) replication group. For Redis (cluster mode disabled) either omit this parameter or set it to 1.

If you set UseOnlineResharding to true, you can update NumNodeGroups without interruption. When UseOnlineResharding is set to false, or is not specified, updating NumNodeGroups results in replacement.