You are probably paying AWS too much — Part 2

1. Leverage reserved capacity — If your workloads have predictable traffic patterns, you can purchase reserved capacity in advance. You will pay an upfront fee at hourly rates for the entire term of reserved capacity, but it offers significant cost savings over on-demand and provisioned capacity mode.

   
   

2. Leverage cheaper regions — Some AWS regions are cheaper than others. So you can opt for more affordable regions if:

• You are not restricted to a specific region

• It does not affect the read/write latency

• You do not need to meet any regulatory or compliance standards

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3. Limit the record sizes — Both capacity modes in DynamoDB use size-dependent billing. It is recommended that you use shorter attribute names. In addition, you can choose the epoch time format for storing dates instead of ISO dates.

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4. Consider Queries over scans — You can use either query or scan methods to fetch data from DynamoDB. However, scanning can sometimes be expensive as it searches your whole table. You will be charged for all the rows scanned. Conversely, queries use partition and sort keys to locate data directly, saving extra costs.

   
   

5. Leverage AWS Backup on top of DynamoDB Backup — AWS Backup offers a cold storage tier for DynamoDB backups. It can reduce your storage costs by up to 66% for long-term backup data. Plus, it provides lifecycle features and inherits table tags that can be used for further cost optimization.

6. Utilize TTL to remove unneeded items — Leverage DynamoDB Time-To-Live feature to automatically delete unneeded or expired items from your tables. Regularly removing such items will help reduce your storage costs. And the feature is free to use!

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