DynamoDB – Scan Scan Operations read all table items or secondary indices. Its default function results in returning all data attributes of all items within an index or table. Employ the ProjectionExpression parameter in filtering attributes. Every scan returns a result set, even on finding no matches, which results in an empty set. Scans retrieve […]
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DynamoDB – Batch Writing Batch writing operates on multiple items by creating or deleting several items. These operations utilize BatchWriteItem, which carries the limitations of no more than 16MB writes and 25 requests. Each item obeys a 400KB size limit. Batch writes also cannot perform item updates. What is Batch Writing? Batch writes can manipulate […]
DynamoDB – Update Items Updating an item in DynamoDB mainly consists of specifying the full primary key and table name for the item. It requires a new value for each attribute you modify. The operation uses UpdateItem, which modifies the existing items or creates them on discovery of a missing item. In updates, you might […]