DynamoDB cost explosion for fast-growing datasets
8/10 HighAs datasets grow, DynamoDB automatically increases partitions (10GB max per partition) but does not increase total provisioned throughput proportionally. This forces continuous throughput increases to maintain query performance, causing costs to spiral multi-fold.
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Query: “What are the most common pain points with DynamoDB for developers in 2025?”4/5/2026
As data grows, so do the number of partitions in order to automatically scale out the data (each partition is a maximum of 10GB). However, the total provisioned throughput for a table does not increase. Thus, the throughput available for each partition will constantly decrease with data growth. To keep up with the existing rate of queries, the total throughput would have to be continually increased, increasing the total cost multi-fold!
Created: 4/5/2026Updated: 4/5/2026