Amazon MemoryDB Pricing

On-demand nodes let you pay by the instance hour with no long-term commitments or upfront fees. This frees you from the costs and complexities of planning, purchasing, and maintaining hardware, and transforms what are commonly large fixed costs into much smaller variable costs. The node type impacts the compute, in-memory data storage capacity, and network throughput available for your MemoryDB cluster.

Nodes with data tiering use solid state drives (SSD) to automatically optimize costs of your MemoryDB clusters by moving the least frequently used items from memory to SSD. Data stored on SSD exhibits slightly higher latency and lower throughput compared to data stored in memory. Nodes with data tiering, available for MemoryDB, are ideal for workloads that access up to 20% of their data regularly, and for applications that can tolerate additional latency the first time a less-frequently accessed item is needed. Amazon MemoryDB R6gd nodes with memory and solid state drives have nearly 5x more total storage capacity and can help customers achieve over 60% storage cost savings when running at maximum utilization compared to MemoryDB R6g nodes with memory only. See Pricing Example 3 below for a comparison on how data tiering can reduce your spend.

Reserved nodes provide a significant discount off the ongoing hourly usage rate for the node(s) you reserve in one-year or three-year terms. With reserved nodes, you can choose to:

• Pay low hourly charges with no upfront payment (No Upfront)
• Make a one-time, partial upfront payment with lower hourly charges (Partial Upfront)
• Pay all upfront for even lower hourly charges (All Upfront)

MemoryDB reserved nodes offer size flexibility within a node family and AWS Region. This means that the discounted reserved node rate will be applied automatically to usage of all sizes in the same node family. When purchasing reserved nodes, you must designate an AWS Region, node type, payment term, and quantity. The reserved nodes may only be used in the designated AWS Region.

Reserved node pricing is also available for cluster nodes using data tiering.

* This is the average monthly payment over the course of the reserved node 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 MemoryDB node type you run. The hourly usage rate is equivalent to the total average monthly payments over the term of the reserved node divided by the total number of hours (based on a 365 day year) over the term of the reserved node.

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

You pay only for the volume of data (in GB) you write to your MemoryDB cluster. This data includes the Redis OSS key, value, and command volume. There are no associated costs for reads.

Snapshot storage for a MemoryDB cluster is the storage associated with the automated and user-initiated snapshots you take. A snapshot is a copy of an entire cluster at the time when the snapshot was taken. There is no additional charge for snapshot storage of up to 100% of your total MemoryDB cluster storage for a region. There is no additional charge for snapshot storage if your snapshot retention period is 1 day. Additional snapshot storage is billed at storage rates in the table below: