DynamoDB Examples

_DynamoDB Examples.md

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UpdateItem.js

dynamodb.updatedItem({
	TableName: 'Url',
	Key: {
        'ShortUrl': 'short.url.example/4ua93',
	},
	UpdateExpression: `SET 
		Usage.Views = Usage.Views + :increment_by,
		Usage.LastVisited = :now
	`,
	ExpressionAttributeValues: {
		':increment_by': 1,
		':now': new Date().toISOString(),
	},
	ReturnValues: 'ALL_NEW',
	ConditionExpression:: 'attribute_exists(ShortUrl)',
}, (error, data) {
	if (error) return console.log(error);
	console.log(data);
}