January 2019
Intermediate to advanced
490 pages
15h 37m
English
Content preview from Serverless Programming Cookbook
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DynamoDB keys and partitions
Each item is identified with a primary key, which can be either only the partition key if it can uniquely identify the item, or a combination of partition key and sort key. The partition key is also called a hash key and the sort key is also called a range key. Primary key attributes (partition and sort keys) can only be string, binary, or number.
Initially, a single partition holds all table data. When a partition's limits are exceeded, new partitions are created and data is spread across them. Current limits are 10 GB storage, 3,000 RCU, and 1,000 WCU. Data belonging to one partition key is stored in the same partition; however, a single partition can have data for multiple partition keys. The partition key ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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