In an Amazon DynamoDB table, the primary key that uniquely identifies each item in the table can be composed of a partition key and a sort key. Well-designed sort keys have two key benefits: They gather related information together in one place where it can be queried efficiently. Careful ...
Each write action that appends the customer action is an idempotent insert, using the customer ID as the partition key and transaction ID as the sort key. This design makes the calculation of the balance more involved, because it requires a Query to pull the items followed...
@DynamoDBHashKey– Maps a class property to the partition key of the table. @DynamoDBAutoGeneratedKey– Marks a partition key or sort key property as being autogenerated.DynamoDBMappergenerates a random UUID when saving these attributes. Only String properties can be marked as autogenerated keys...
A global secondary index is one that has a partition or partition sort key that really is distinct from the table's primary key. Because questions on the index can cover all the items in a table across all the partitions, it is referred to as a global secondary index. Local secondary ind...
Key requirements this solution addresses include: Programmatically ingest CSV data into DynamoDB using an extract, transform, and load (ETL) pipeline Continuously append data to an existing DynamoDB table Extend the solution to on-premises environments, not just AWS ...
locx.deletePoint({RangeKeyValue:{S:"1234"},GeoPoint:{// An object specifying latitutde and longitude as plain numbers.latitude:51.51,longitude:-0.13,},DeleteItemCommandInput:{// Optional, any additional parameters to pass through.// TableName and Key are filled in for you// Example: Only ...
Use composite attributes. Try to combine more than one attribute to form a unique key, if that meets your access pattern. For example, consider an orders table withcustomerid#productid#countrycodeas the partition key andorder_dateas the sort key, where the symbol # is used to split differen...
Partition key is required. [API: Query] restore Restore a DynamoDB table from backup data scan Retrieve items in a table without any condition. [API: Scan] upd Update an existing item. [API: UpdateItem] use Switch target table context. After you use the command you don't need to ...
.dynamodbv2.model.AttributeDefinition; import com.amazonaws.services.dynamodbv2.model.CreateTableRequest; import com.amazonaws.services.dynamodbv2.model.GlobalSecondaryIndex; import com.amazonaws.services.dynamodbv2.model.KeySchemaElement; import com.amazonaws.services.dynamodbv2.model.KeyType; import ...
The table design - this is the primary index using the table's partitionKey and the sortKey The index schema (GSI1) - this uses the GSI1pk and GSIsk attributes to create the first additional index The index schema (GSI2) - this uses the GSI2pk and GSIsk attributes to create the se...