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Question1 answer4,654 followingPosted 28 Mar 2025, 10:10 UTC76.8K views2,294 votes

DynamoDB On-Demand vs Provisioned Auto Scaling for Bursty Reads Under a Cost Ceiling

Goal Select a DynamoDB capacity mode for a table serving bursty read traffic while staying under a fixed monthly cost ceiling. On-demand mode bills per request and requires no capacity planning, which fits unpredictable spikes. Provisioned mode with Application Auto Scaling sets read capacity units and a target utilization, usually lowering the cost per requ

Community & Careers · Editorial question

auto-scaling

dynamodb provisioned-capacity

Community & Careers

Question1 answer3,531 followingPosted 03 Mar 2023, 07:26 UTC82.2K views3,702 votes

owner answered

DynamoDB Capacity Mode Cost Thresholds for Low-Traffic Workloads

Optimizing costs for low-traffic DynamoDB tables requires a choice between On-Demand and Provisioned capacity modes. While On-Demand mode removes the need for throughput management by charging per request, Provisioned mode allows for a fixed cost ceiling through Read Capacity Units (RCUs) and Write Capacity Units (WCUs), potentially supplemented by Auto Scal

Community & Careers · Editorial question

on-demand-capacity aws-cost-optimization

dynamodb