DynamoDB

Split into four focused pages: data modeling, indexes and cost tradeoffs, and using it in code, each a five-minute read.

Single-table design, prefixed keys, and the two shapes a primary key can take, worked through step by step.

Updated Sep 26, 2026

Inverted indexes, GSI overloading, sparse indexes, and the real cost tradeoff between a filter expression and an index.

Updated Sep 26, 2026

The SDK Document Client, conditional writes, and update expression placeholders, all in one place.

Updated Sep 26, 2026

Scan vs Query, pagination with LastEvaluatedKey, Streams, capacity modes, and TTL, all in one place.

Updated Sep 26, 2026

DynamoDB | Durgesh Rai