August 2014
Beginner to intermediate
236 pages
5h 7m
English
Content preview from Mastering DynamoDBBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Operations on items
Items in DynamoDB are simply collections of attributes. Attributes can be in the form of strings, numbers, binaries, or a set of scalar attributes. Each attribute consists of a name and a value. An item must have a primary key. As we have already seen, a primary key can have a hash key or a combination of hash and range keys. In addition to the primary key, items can have any number of attributes except for the fact that item size cannot exceed 64 KB.
While doing various item operations, you should have be aware of following DynamoDB features.
Strong versus eventual consistency
In Chapter 1, Getting Started, we had talked about the durability feature of DynamoDB. To provide this durability, DynamoDB keep copies of items in various ...
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