New – Size flexibility for Amazon ElastiCache reserved nodes

This article introduces the new size flexibility feature for Amazon ElastiCache reserved nodes. It allows customers to apply their reserved node discount across different node sizes within the same node family and region, rather than being locked into a specific node size.

Specifically, the article covers:

• An overview of Amazon ElastiCache and its benefits
• How reserved nodes previously required committing to a specific node size for 1-3 years
• The new size flexibility feature and how it works with normalization factors
• Scenarios illustrating how to use size flexibility for scaling clusters up/down, mixing node sizes, etc.
• Conclusion highlighting the automatic application of this feature for new/existing reserved nodes