Limit on Number of Attributes in Table DynamoDB?

Question

Hi I currently have a list of dictionaries I am trying to insert into DynamoDB (each dict as an item). Each item having a hashkey and label1,label2,...label3000 key/value pairs with label# being the key and a string as the value pair. Some of my items have up to label fields. Is this a problem when using put_item in DynamoDB? Currently, the label# keys within each dictionary are unordered, and when I go to insert each item it is only adding 19 of the fields.

Answer 1

There is no limit to the number of attributes but the total item size is limited to 400kb.

Items

Item Size

The maximum item size in DynamoDB is 400 KB, which includes both attribute name binary length (UTF-8 length) and attribute value lengths (again binary length). The attribute name counts towards the size limit.

For example, consider an item with two attributes: one attribute named "shirt-color" with value "R" and another attribute named "shirt-size" with value "M". The total size of that item is 23 bytes.

Attributes

Attribute Name-Value Pairs Per Item

The cumulative size of attributes per item must fit within the maximum DynamoDB item size (400 KB).

Number of Values in List, Map, or Set

There is no limit on the number of values in a List, a Map, or a Set, as long as the item containing the values fits within the 400 KB item size limit.

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