Kevin Old kevinold

An introduction to DynamoDB

DynamoDB is a powerful, fully managed, low latency, NoSQL database service provided by Amazon. DynamoDB allows you to pay for dedicated throughput, with predictable performance for "any level of request traffic". Scalability is handled for you, and data is replicated across multiple availability zones automatically. Amazon handles all of the pain points associated with managing a distributed datastore for you, including replication, load balancing, provisioning, and backups. All that is left is for you to take your data, and its access patterns, and make it work in the denormalized world of NoSQL.

Modeling your data

The single most important part of using DynamoDB begins before you ever put data into it: designing the table(s) and keys. Keys (Amazon calls them primary keys) can be composed of one attribute, called a hash key, or a compound key called the hash and range key. The key is used to uniquely identify an item in a table. The choice of the primary key is particularl

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	Description: 'Cloudformation stack to manage permission to deploy a serverless service'

	Parameters:
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	Type: String
	ServiceName2:
	Description: Name of the 2nd Service you want to deploy

	//
	// BackgroundTask.h
	// tomtrack
	//
	// Created by Liam Edwards-Playne on 13/02/2016.
	//

	#import "RCTBridgeModule.h"

	@interface BackgroundTask : NSObject <RCTBridgeModule>

	/**
	* Touchable Highlight example (that fires invariant as expected)
	*/
	'use strict';

	var React = require('react-native');
	var {
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	import React, { Component, PropTypes } from 'react';
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	import History from 'react-router/History';
	import StaticRouter from 'react-router/StaticRouter';

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	class DispatchingRouter extends Component {
	static propTypes = {
	store: PropTypes.object,

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	* npm install xmldom --save
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	}

	import React, { Component } from 'react'
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	import Icon from 'react-native-vector-icons/Ionicons'

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	}

	/eslint no-console: 0/
	import React, { PropTypes } from 'react'
	import { historyContext as historyContextType } from 'react-history/PropTypes'
	import StaticRouter from './StaticRouter'

	// intitial key is `null` because JSON.stringify turns undefined into null, and
	// we use this value as the "initial key"
	const initialKeys = [ null ]

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	import { objectType, enumType, schemaFrom, listOf } from 'graphql-schema';
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