aws-dynamodb

Create a table with a partition key

$ aws dynamodb create-table --table-name [my-table] --attribute-definitions AttributeName=id,AttributeType=S --key-schema AttributeName=id,KeyType=HASH --billing-mode PAY_PER_REQUEST

$ aws dynamodb put-item --table-name [my-table] --item '{"id": {"S": "[item-id]"}, "name": {"S": "[value]"}}'

$ aws dynamodb get-item --table-name [my-table] --key '{"id": {"S": "[item-id]"}}'

$ aws dynamodb query --table-name [my-table] --key-condition-expression "id = :id" --expression-attribute-values '{":id": {"S": "[item-id]"}}'

$ aws dynamodb scan --table-name [my-table]

$ aws dynamodb update-item --table-name [my-table] --key '{"id": {"S": "[item-id]"}}' --update-expression "SET #n = :val" --expression-attribute-names '{"#n": "name"}' --expression-attribute-values '{":val": {"S": "[new-value]"}}'

$ aws dynamodb delete-item --table-name [my-table] --key '{"id": {"S": "[item-id]"}}'

aws dynamodb command [options]

aws dynamodb is the AWS CLI interface for Amazon DynamoDB, a fully managed NoSQL key-value and document database. DynamoDB provides single-digit millisecond performance at any scale with built-in security, backup, and in-memory caching.
Tables store items identified by primary keys (partition key, or partition + sort key). DynamoDB supports on-demand and provisioned capacity modes, global tables for multi-region replication, and transactions for ACID operations.

create-table

Create a new DynamoDB table

Delete a table

Get table metadata and status

Insert or replace an item

Retrieve an item by primary key

Modify item attributes

Remove an item by primary key

Retrieve items by partition key with optional filtering

Read all items in a table

Write or delete multiple items across tables

Execute multiple writes atomically

Item size is limited to 400KB. Scan operations read the entire table and can be expensive on large tables. Query is preferred over scan for performance. Provisioned capacity can lead to throttling if exceeded. Eventually consistent reads are the default; strongly consistent reads cost more.

Amazon DynamoDB launched in January 2012 as a successor to SimpleDB. Global Tables for multi-region replication came in 2017, on-demand capacity mode in 2018, and PartiQL query language support in 2020. It remains one of AWS's most widely used database services.

aws(1), aws-dynamodbstreams(1), aws-rds(1)