AWS DynamoDB Database

AWS DynamoDB is a fully managed NoSQL database optimized for low-latency access. You define a table with a primary key (partition key ± sort key), store JSON documents, and query at millisecond speeds. Mastery means understanding key design (avoiding hot partitions), query patterns (GSI, LSI, scans), consistency models (eventual vs. strong), and cost optimization. Learning path: DynamoDB basics (2 weeks) → table design (2 weeks) → querying (2 weeks) → optimization + streams (2 weeks).