Documentdb Io Optimized «2024-2026»

The I/O-Optimized option removes that bottleneck completely. Since switching, our P99 latency has stabilized significantly. We no longer see the occasional 500ms spikes during peak hours because the storage layer isn't fighting for credits. It feels like the database is finally unchained.

Amazon DocumentDB (with MongoDB compatibility) offers two storage configurations: and IO-Optimized . The IO-Optimized configuration is designed for applications with high input/output (I/O) demands. It provides predictable performance by decoupling I/O charges from storage usage, making it cost-effective for I/O-intensive workloads. This report explains the architecture, benefits, use cases, and cost implications of the IO-Optimized setting. documentdb io optimized

From an internal perspective, IO-Optimized does change the underlying distributed, replicated storage system (6 replicas across 3 AZs). However, it changes how the storage layer is billed and provisioned. The I/O-Optimized option removes that bottleneck completely

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Assumes $0.10/GB Standard storage, $0.20/GB IO-Optimized storage, $0.20/million I/O. Actual regional prices vary. It feels like the database is finally unchained