Previous Generation Nodes

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AWS offers Previous Generation Nodes for users who have optimized their applications around these nodes and have yet to upgrade. Previous Generation Nodes are still fully supported and retain the same features and functionality. Previous Generation Nodes are available through the CLI and API tools.

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AWS Free Tier includes 750hrs of Micro Cache Node with Amazon ElastiCache.

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We encourage you to use the lastest generation of nodes to get the best performance, but we will continue to support Previous Generation Nodes after new nodes launch. If you are currently using a Previous Generation Node and would like to see which one would be a suitable upgrade, see the table below and learn how the latest generation of nodes could benefit you.

M1 to M3

M3 nodes provide better, more consistent performance than M1 nodes. M3 nodes are also less expensive than M1 nodes.

M1		M3
No	Latest Intel Xeon Processor	Yes
Good	I/O Performance	Better
Good	Price per Performance	Better

M2 to R3

R3 nodes provide the latest Intel Xeon Processors, higher memory bandwidth, and superior I/O and network performance. R3 provides the lowest price point per GB of RAM of all ElastiCache nodes.

M2		R3
No	Latest Intel Xeon Processors	Yes
No	Enhanced Networking	Yes
Good	Sustained memory bandwidth	Better
Good	I/O performance	Better
Good	Memory per cache node	Better
Good	Price point per GiB of RAM	Best

T1/M1 to T2

T2 nodes are Burstable Performance Nodes that provide a baseline level of CPU performance with the ability to burst above the baseline. They are recommended for workloads that don't use the full CPU often or consistently, but occasionally need to burst to higher CPU performance, such as test and development environments, as well as small workloads. T2 nodes are less expensive than m1.small, m1.medium, and t1.micro nodes in most regions.

T1/M1.small		T2
No	Latest Intel Xeon Processors	Yes
No	Turbo up to 3.3GHz	Yes
M1 only	Supports Backup and Restore for Redis	No

Previous Generation Node Details & Pricing

Just like our current nodes, Previous Generation Nodes give you access to the capabilities of a familiar Memcached and Redis engines.

Previous Generation Node Details

Cache Node Type	vCPU	Memory (GiB)	Network Performance
Standard - Previous Generation
cache.m1.small	1	1.3	Low
cache.m1.medium	1	3.35	Moderate
cache.m1.large	2	7.1	Moderate
cache.m1.xlarge	4	14.6	High
Memory Optimized - Previous Generation
cache.m2.xlarge	2	16.7	Moderate
cache.m2.2xlarge	4	33.8	Moderate
cache.m2.4xlarge	8	68	High
Compute Optimized - Previous Generation
cache.c1.xlarge	8	6.6	High
Micro - Previous Generation
cache.t1.micro	1	0.213	Very Low

Previous Generation On-Demand Node Prices

Pricing is per instance-hour consumed for each instance, from the time an instance is launched until it is terminated or stopped. Each partial instance-hour consumed will be billed as a full hour.

Previous Generation Reserved Nodes

Reserved Nodes give you the option to make a low, one-time payment for each node you want to reserve and in turn receive a significant discount on the hourly charge for that instance. Amazon ElastiCache provides three Reserved Node types (Light, Medium, and Heavy Utilization Reserved Nodes) that enable you to balance the amount you pay upfront with your effective hourly price.

Based on your application workloads and the amount of time you plan to run them, Amazon ElastiCache Reserved Nodes may provide substantial savings over running on-demand nodes.