Is DynamoDB free?
AWS Free Tier includes 25GB storage and 25 read/write capacity units forever. Enough for small apps or testing. Beyond that, pay per read/write or use on-demand pricing.
How does DynamoDB pricing work?
Two modes: On-demand (pay per request) or Provisioned (pay for capacity). On-demand: $1.25 per million writes, $0.25 per million reads. Storage is $0.25/GB/month.
What is DynamoDB?
DynamoDB is AWS's NoSQL database service. Key-value and document store with single-digit millisecond latency at any scale. Fully managed, serverless option available.
When to use DynamoDB vs RDS?
DynamoDB for high-scale, simple query patterns. RDS for complex queries and joins. DynamoDB for serverless apps; RDS when you need relational features. Different tools for different jobs.
Does DynamoDB scale automatically?
Yes, DynamoDB handles scaling automatically. On-demand mode scales instantly. Provisioned capacity can auto-scale based on utilization. No downtime for scaling.