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.

Get Started with AWS for Free

Create a Free Account
Or Sign In to the Console

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

View AWS Free Tier Details »

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. 

M5 instances provide the latest Intel Xeon processors paired with the new Nitro Hypervisor which delivers practically all of the compute and memory resources of the host hardware to your instances. With M5, you get a higher performing CPU with support for AVX-512 instructions, up to 384 GiB of RAM, and up to 25 Gbps of networking bandwidth, all at a lower price point then our previous generation instances.

M1 M3 Features M5
No No Latest Intel Xeon Processor Yes
No No Lightweight Nitro Hypervisor Yes
High High
Network Performance 25 Gbps
No No Enhanced Networking
Yes (ENA-only)
Good Better Price per Compute Performance Best

The R5 family of instances provide a newer Intel Xeon processor, up to 636.61 GiB of RAM, are EBS optimized and support Enhanced Networking with up to 25 Gbps offering lower latency, and low jitter.

M2 R3 Features R5  
No No Latest Intel Xeon Processors Yes  
No Yes Enhanced Networking Yes  
Good Better Sustained memory bandwidth Best  
Good Better I/O performance Best  
Good Better Memory per cache node Best  
Good Better Price point per GiB of RAM Best  

T2 and T3 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. Both T2 and T3 nodes are less expensive than m1.small, m1.medium, and t1.micro nodes in most regions.

T1/M1.small Features T2 T3
No Latest Intel Xeon Processors Yes Yes
No Turbo up to 3.1GHz Yes Yes
M1 only Supports Backup and Restore for Redis Yes Yes

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

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
cache.m3.medium 1 2.78 Moderate
cache.m3.large 2 6.05 Moderate
cache.m3.xlarge 4 13.3 High
cache.m3.2xlarge 8 27.9 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
cache.r3.large 2 13.5 Moderate
cache.r3.xlarge 4 28.4 Moderate
cache.r3.2xlarge 8 58.2 High
cache.r3.4xlarge 16 118 High
cache.r3.8xlarge 32 237 10 Gigabit
Compute Optimized - Previous Generation
cache.c1.xlarge 8 6.6 High
Micro - Previous Generation
cache.t1.micro 1 0.213 Very Low

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.

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.


Please note the one-time fee per node is non-refundable.

Please note the one-time fee per node is non-refundable.

Please note the one-time fee per node is non-refundable.