elasticache-redis-cost

Command elasticache-redis-cost suggests AWS ElastiCache instance types that can fit existing Redis instances.

Usage of elasticache-redis-cost:
  -any-family
    	take into account all instance families, not only memory-optimized
  -any-generation
    	take into account old generation instance types
  -csv
    	print report in CVS instead of formatted text
  -html path
    	path to HTML file to save report; if empty, text report is printed to stdout
  -max-load int
    	source dataset must fit this percent maxmemory utilization of the target, [1,100] range (default 80)
  -redises path
    	path to file with Redis addresses, one per line (/dev/stdin to read from stdin)
  -region region
    	use prices for this AWS region (default "us-east-1")
  -reserved-memory-percent int
    	value of reserved-memory-percent ElastiCache parameter, [0,100] range (default 25)

Please see AWS documentation regarding reserved-memory-percent if you decide to change it:

https://aws.amazon.com/premiumsupport/knowledge-center/available-memory-elasticache-redis-node/
https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/ParameterGroups.Redis.html#ParameterGroups.Redis.3-2-4.New

> The percent of a node's memory reserved for nondata use. By default, the
> Redis data footprint grows until it consumes all of the node's memory. If
> this occurs, then node performance will likely suffer due to excessive
> memory paging. By reserving memory, you can set aside some of the available
> memory for non-Redis purposes to help reduce the amount of paging.

> This parameter is specific to ElastiCache, and is not part of the standard
> Redis distribution.