Category Archives: DynamoDB

Parsing DynamoDB Items – AWS Lambda with Node.js

Hi everyone,

A quick post on how to parse DynamoDB items into something more readable when using lambda with Node.js:

Original:

console.log(data["Item"]);

{
    CatBreedId: { S: '17acbc81-2b4a-462b-be87-bcc49580b1ae'},
    Name: { S: 'Cat #1'}
}

Parsed:

console.log(AWS.DynamoDB.Converter.unmarshall(data["Item"]));

{
    "CatBreedId": "17acbc81-2b4a-462b-be87-bcc49580b1ae",
    "Name": "Cat #1"
}

Official doco is here: https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/DynamoDB/Converter.html

Thanks to the following stackoverflow post for the info: https://stackoverflow.com/a/44536616/522859

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Create DynamoDB Table – AWS CLI

Hi everyone,

A quick example of how to create a dynamodb table using the AWS CLI:

aws dynamodb create-table --table-name CatBreeds --attribute-definitions AttributeName=CatBreedId,AttributeType=S --key-schema AttributeName=CatBreedId,KeyType=HASH --provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5

For more info the following AWS page helped me: https://docs.aws.amazon.com/cli/latest/reference/dynamodb/create-table.html