Dynamo Ruby Sample

dynamo_sample.rb

#!/usr/bin/env ruby

require 'aws-sdk'

# create a table (10 read and 5 write capacity units)
dynamo_db = AWS::DynamoDB.new :region => 'us-west-2'

# get a table by name and specify its schema
table = dynamo_db.tables['dynamo-test']
table.hash_key = ['Customer ID', :number]

item = table.items.create('Customer ID' => 12345, 'foo' => 'bar')

# add attributes to an item
1.upto(10).each do |c|
  start_time = Time.now
  item.attributes.set 'updated_at' => Time.now.to_i
  write_time = Time.now
  item.attributes['updated_at'].to_i
  end_time = Time.now
  puts "Write: #{((end_time - start_time) * 1000).to_i} ms"
end

# read attributes to an item
1.upto(10).each do |c|
  start_time = Time.now
  item = table.items[12345]
  item.attributes['updated_at']
  end_time = Time.now
  puts "Read: #{((end_time - start_time) * 1000).to_i} ms"
end

item.delete