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 Amazon ElastiCache for Free

As part of the AWS Free Tier, you can get started with Amazon ElastiCache for free. Upon signup, new AWS customers receive 750 hours of ElastiCache cache.t2.micro or cache.t3.micro node usage for free for up to 12 months.

The Amazon AWS Free Tier applies to participating services across our global regions. Your free usage under the AWS Free Tier is calculated each month across all regions and automatically applied to your bill – free usage does not accumulate. The AWS Free Tier is not available in the AWS GovCloud (US) regions or the China (Beijing) region at this time.

Upgrade paths

We encourage you to use the latest 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/M3 to M5

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

M2/R3 to R5

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

T1/M1 to T2/T3

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

Details and pricing

On-demand | Reserved

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
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

Previous generation on-demand node pricing

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 node pricing

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.

* This is the average monthly payment over the course of the Reserved Instance term. For each month, the actual monthly payment will equal the actual number of hours in that month multiplied by the hourly usage rate or number of seconds in that month multiplied by the hourly usage rate divided by 3600, depending on the Elasticache instance type you run. The hourly usage rate is equivalent to the total average monthly payments over the term of the Reserved Instance divided by the total number of hours (based on a 365 day year) over the term of the Reserved Instance.

** Effective hourly pricing helps you calculate the amount of money a Reserved Instance will save you over On-Demand pricing. When you purchase a Reserved Instance, you are billed for every hour during the entire Reserved Instance term you select, regardless of whether the instance is running. The effective hourly price shows the amortized hourly instance cost. This takes the total cost of the Reserved Instance over the entire term, including any upfront payment, and spreads it out over each hour of the Reserved Instance term.

Additional pricing resources

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