read_attribute_before_type_cast is 50% faster than read_attribute when type casting is required

read_attribute_before_type_castVSread_attribute.rb

require 'benchmark'

person = Person.new(created_at: '2016-2-19')
time_1 = Benchmark.realtime do
  100000.times do
    person.read_attribute_before_type_cast(:created_at)
  end
end

time_2 = Benchmark.realtime do
  100000.times do
    person.read_attribute(:created_at)
  end
end

p time_1 #0.053
p time_2 #0.079