| Service | I/O charge | Typical cost for 1TB data, 200M I/O, 2 replicas | |---------|------------|--------------------------------------------------| | | $0.20/million | ~$1,200/month | | MongoDB Atlas (M40, 3 nodes) | Included in instance | ~$1,500-1,800/month | | Self-managed MongoDB on EC2 (r5.xlarge x3) | EBS I/O charges (~$0.05/GB-month + $0.05/mil) | ~$900-1,100 + operational overhead |
: T3 baseline CPU credits may be exhausted under sustained load.
Optimizing your requires a deep understanding of its decoupled architecture, which separates compute (instances) from storage. Unlike traditional databases, DocumentDB's pricing is multi-dimensional, often leading to unexpected bills for high-I/O or storage-heavy workloads. 1. Breakdown of DocumentDB Cost Components aws documentdb cost
Implementing these best practices can significantly lower your monthly AWS invoice: AWS announces Amazon DocumentDB I/O-Optimized
(may need refresh): https://calculator.aws/#/create/service/DocumentDB | Service | I/O charge | Typical cost
Input/Output (I/O) requests are a separate cost component that is often overlooked.
| Instance | vCPU | RAM (GB) | Price/hour | Price/month (730h) | |----------|------|----------|------------|--------------------| | db.r5.large | 2 | 16 | $0.208 | ~$152 | | db.r5.xlarge | 4 | 32 | $0.416 | ~$304 | | db.r5.2xlarge | 8 | 64 | $0.832 | ~$607 | | db.r5.4xlarge | 16 | 128 | $1.664 | ~$1,215 | | db.r5.12xlarge | 48 | 384 | $4.992 | ~$3,644 | 200/month | | MongoDB Atlas (M40
Here are the detailed cost components for AWS DocumentDB: